laminae 0.3–1 mm. Disc-florets 8–30+. Cypselae uniformly pale tan to light gray-brown, 1–1.5 mm, faces sparsely strigillose; pappi of 15–25, white bristles
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533. Mentioned on page 532, 534. Stems: trunk bark light gray, ± exfoliating; 1-year old twigs gray. Leaves: blade ± lanceolate, narrowly elliptic to narrowly
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knobby short-shoots, 70–150 cm, puberulent-tomentose, bark grayish red to light gray. Leaves alternate, well spaced on long-shoots or fasciculate on short-shoots;
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80 dm. Stems: twigs: new growth reddish, 1-year old tan, 2-years old light gray; thorns on twigs straight, 2-years old blackish, usually shiny, ± slender
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3.3–4.8 mm, glabrous or sparsely villous; columella 1.8–2.1 mm. Seeds light gray, ovoid, 2.2–2.4 × 1.6–1.8 mm, with shallow depressions; caruncle absent
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usually glabrous, sometimes sparsely puberulent; columella 2.4–3.3 mm. Seeds light gray, cylindric ovoid-oblong, 2–2.8 (–3) × 1.4–2.2 mm, irregularly shallowly
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Leaf blades usually tapered-acute at base, rarely rounded; bark light gray to reddish gray, checkered with squarish to rectangular segments or plates, 1-4
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portion of the style may be slightly maroon; the stigmas are grayish or light green. The stems of L. rigidum are angled. Its capsule walls are so thin
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pistillate florets with laminae 0.3–1+ mm; cypselae uniformly pale tan to light gray-brown Conyza canadensis
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distinctly pubescent, 7-veined, veins usually prominent; upper lemmas light-brown, gray, and purple. 2n = 36. Pacific Islands (Hawaii) Introduced from Africa
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specimens actually belong to var. microphyllus but are abaxially off-white to light gray and tomentose to villous. None. None. "chartaceous" is not a number.window
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mollis group, caducous and membranous, and bright crimson when fresh. The light gray bark flakes off in long narrow strips, which is unusual in Crataegus.
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of its distal leaves and peduncle bracts. The hairs give the plants a light gray-green appearance from a distance. The leaves are stiff, unlike other taxa
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usually promptly exfoliating, reddish, (thin), or, sometimes, persistent, gray, rough, shredded (A. morroensis, A. nissenana, A. nummularia, A. osoensis
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or membranous; distally ± scarious, often black, brown, castaneous, cream, gray, green, olivaceous, pink, red, white, or yellow), apices usually acute, sometimes
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Seeds 1–65 [–200], tan, yellowish-brown, light-brown, pale green, brown, reddish-brown, silver-gray, or gray to black (papillose or tuberculate); arillate
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Mentzelia tiehmii, Mentzelia todiltoensis, Mentzelia uintahensis (Torrey & A. Gray) Bentham & Hooker f. Gen. Pl. 1 : 804. 1867. John J. Schenk, Larry Hufford
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not glaucous abaxially), hairs usually white, sometimes also ferruginous or gray; juvenile blade hairs white, sometimes also ferruginous. Catkins flowering
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sometimes glabrate or glabrous, 1-year old purple-brown, older gray or dark gray, sometimes gray-brown; thorns on twigs absent or sparse to numerous, usually
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(0.3–1.4 mm, length 5–20% longer inner), inner 2–3 series of 25–50 light tan to light rust, unequal, barbellate, apically attenuate or weakly clavate bristles
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Perigynia gray-green; spikes aggregated, forming an ovoid to suborbicular head; perigynia obscurely veined. Carex tenuiflora 3 Perigynia light green; spikes
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Treatment appears in FNA Volume 3. Trees or shrubs, evergreen or deciduous. Bark gray to dark-brown or black, smooth or furrowed. Leaf-blade lobed or unlobed,
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64 or 32 (rarely 16) per sporangium. Spores all 1 kind, brown, black, or gray (rarely yellow), globose to globose-tetrahedral or trigonal, occasionally
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cuneate-oblanceolate, 11–35 × 2–6 imm, acute, not flagged (apices acute), faces gray-pubescent. Heads 3–25 in corymbiform to paniculiform arrays. Involucres:
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mm. Carex gmelinii 32 Perigynia gray-green, papillose; beak absent or less than 0.2 mm. Carex buxbaumii 33 Perigynia gray-green, conspicuously papillose
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(Linnaeus) Torrey & A. Gray Ludwigia [unranked] Ludwigiantha Torrey & A. Gray Ludwigia sect. Microcarpium Munz Ludwigiantha (Torrey & A. Gray) Small Treatment
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Stem, leaf, and flower size vary with environmental factors such as aspect, light, available soil moisture, and other edaphic conditions (Klaber; L. E. McKinney
39 KB (2,374 words) - 11:16, 30 July 2020
subg. Ivesia (Torrey & A. Gray) Rydberg Potentilla sect. Ivesia (Torrey & A. Gray) Baillon Potentilla subg. Ivesia (Torrey & A. Gray) Jepson Treatment appears
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oreganum, Sedum oreganum var. tenue Nuttall in J. Torrey and A. Gray in J. Torrey and A. Gray, Fl. N. Amer. 1: 559. 1840,. Hideaki Ohba IllustratedEndemic
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root-sprouting. Stems light-brown to gray-green (woody, somewhat pliable, leafy), persistently canescent to glabrescent. Leaves deciduous, whitish gray or green to
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cuneate-oblanceolate, 11–35 × 2–6 mm, acute, not flagged (apices acute), faces gray-pubescent. Heads 3–25 in corymbiform to paniculiform arrays. Involucres:
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Treatment appears in FNA Volume 3. Shrubs or trees, 3-50 m. Bark light to dark gray or gray-brown, smooth or split into ridges or plates. Twigs purplish brown
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Capsules glabrous, rarely glandular-puberulent distally. Seeds tan, brown, gray, or black, angled to slightly rounded, 0.4–2 (–3.5) mm. North America Species
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unbranched or, less often, branched. Leaves evergreen in rosette; blade light green to green and occasionally with lighter patterns of white (“cross-zoned”)
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old reddish to dark or very dark-brown, rarely tan to chestnut, older gray or gray-brown, sometimes dark purple-brown; thorns on twigs usually few, straight
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inflorescence”) of type species Synonyms: Evax sect. Diaperia (Nuttall) A. Gray Treatment appears in FNA Volume 19. Treatment on page 460. Mentioned on page
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to dense. Leaves ascending to erect, 7–65 × 4–20 cm; blade glaucous-gray to light green, not cross-zoned, linearlanceolate to lanceolate or broadly ovate
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Closterostyles Torrey & A. Gray Potentilla sect. Closterostyles (Torrey & A. Gray) Baillon Potentilla subg. Closterostyles (Torrey & A. Gray) Juzepczuk Potentilla
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texana Torrey & A. Gray Fl. N. Amer. 2: 312. 1842. Lowell E. Urbatsch, Patricia B. Cox Synonyms: Rudbeckia subg. Macrocline (Torrey & A. Gray) P. B. Cox & Urbatsch
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8, 13, or 21 (–30+) in 1–2 series, erect (reflexed in fruit), distinct, (light to dark green, yellowish, reddish, or cyanic) linear to ensiform, equal to
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puberulent to tomentose; blade purplish, purple-tinted, or gray-green abaxially, gray, green, or gray-green adaxially, sometimes shiny adaxially, ovate, orbiculate
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base, or on rhizomes, reforming annually; outer coats generally brown or gray, smooth, fibrous, or with cellular reticulation (generally important in identification);
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usually tufted, 2–4 (–8) dm. Twigs pale reddish to purplish, becoming gray to dark gray, puberulent and sparsely stipitate-glandular, becoming glabrate. Leaves
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their apophyses, which at the time of seed-shed are cream to light brown or gray—rather than light red-brown. They are distinguished from each other as follows:
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56, 58. Shrubs, 0.5–2 m. Stems red to gray, glabrous or hairy. Leaves deciduous; petiole 2–12 mm; blade light to bright green abaxially, green or dull
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valida, Physaria vicina, Physaria vitulifera (Nuttall ex Torrey & A. Gray) A. Gray Gen. Amer. Bor. 1: 162. 1848. Steve L. O’Kane Jr. Common names: Bladderpod
40 KB (1,647 words) - 11:54, 30 July 2020
Vesicaria lasiocarpa Hooker ex A. Gray Smithsonian Contr. Knowl. 5(6): 13. 1853 Synonyms: Lesquerella lasiocarpa (Hooker ex A. Gray) S. Watson Treatment appears
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subsp. philbrickii, Malacothrix foliosa subsp. polycephala A. Gray in A. Gray et al. in A. Gray et al., Syn. Fl. N. Amer. ed. 2, 1: 455. 1886. W. S. Davis
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axile; stigma capitate. Capsules: dehiscence loculicidal. Seeds 5–100, dark gray, brown, or tan, ovoid, wings absent. x = 8. North America, Mexico, South
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corolla 14–22 mm, tube white, yellowish, or light purple to purple, 7–15 mm; galea white, yellowish, or light purple to purple, 7–10 mm, beaked, beak straight
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with apiculate stylar remnant), glabrous or glabrate. Seeds 1–2, buff to light-brown, ellipsoid; hilum ovoid to ellipsoid; embryo vertical, oblique, or
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North America Association Shrubs, rhizomatous-spreading, 0.2-1 (-2.5) m. Bark gray or brown, thin, smooth. Twigs densely covered with tight, yellowish, peltate
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page 359. Plants perennial. Stems erect, gray-green to purple, 3–6 dm, sparsely pubescent. Leaf-blades light green, sometimes with purple margins, triangular
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capsular or baccate. Seeds many per locule, usually black, occasionally gray, flattened, round, rarely obovate or ovate. x = 25, 30. e coastal plain,
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fasciculatum (Nuttall) Torrey & A. Gray Orobanche fasciculata var. franciscana Achey O. fasciculatum var. lutea (A. Gray) Achey O. fasciculata var. subulata Goodman
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deliquescent, trunk and branches terete. Bark of trunk and branches brownish gray to light-brown, thin, smooth, breaking and shredding into shaggy vertical strips
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Quamasia hyacinthina (Rafinesque) Britton Schoenolirion texanum (Scheele) A. Gray Treatment appears in FNA Volume 26. Treatment on page 307. Mentioned on page
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Leaves light or dark gray-green, sticky-resinous; involucres ovoid, 3–5 × 4–6 mm; florets 12–20 (California) Artemisia rothrockii 7 Leaves gray-green,
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Basionym: Cereus californicus Torrey & A. Gray Fl. N. Amer. 1: 555. 1840 Opuntia californica (Torrey & A. Gray) Coville 1899 Treatment appears in FNA Volume
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elliptic to subcircular, 4–5.5 × 4–5 mm; wool white or yellowish to tan, aging gray-black. Spines 6–20 (–30+) per areole, often accompanied by 0–5 short bristlelike
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genus Orthocarpus and the movement of Orthocarpus sect. Castillejoides A. Gray into Castilleja, based on morphological congruities, base chromosome numbers
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hugeri (Small) C. K. Schneider Leiophyllum buxifolium var. prostratum (Loudon) A. Gray Leiophyllum hugeri de Candolle Leiophyllum prostratum Leiophyllum serpyllifolium
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ascending, occasionally reflexed, 80–200 × 15–25 cm; blade light green to green or glaucous-gray, sometimes variegated or cross-zoned, narrowly to broadly
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caseana, Corydalis caseana subsp. cusickii, Corydalis caseana subsp. hastata A. Gray Proc. Amer. Acad. Arts 10: 69. 1874. Kingsley R. Stern Common names: Fitweed
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mm, tips mucronate, faces abaxially tomentose, adaxially green-glabrous or gray-pubescent. Cauline leaves linear, 8–40 mm, distal sometimes flagged (apices
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Contr. Gray Herb. 188: 1–63. Solbrig, O. T. 1964. Infraspecific variation in the Gutierrezia sarothrae complex (Compositae–Astereae). Contr. Gray Herb.
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Upper Louisiana, no. 51. 1813 Synonyms: Malvastrum coccineum (Nuttall) A. Gray Sida coccinea (Nuttall) de Candolle Treatment appears in FNA Volume 6. Treatment
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genusLeucophyllum speciesLeucophyllum frutescens (Berlandier) I. M. Johnston Contr. Gray Herb. 70: 89. 1924. James Henrickson, Guy L. Nesom Common names: Texas barometer-bush
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persistent and shredding, brown, becoming gray with age; seed 1. > 11 10 Bracts of pollen cones yellow to light brown; inner bracts of seed cones herbaceous;
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types, 2–3 mm or (5–) 6–8 mm, (1–) 1.5–3 cm apart; apical spine light or dark-brown to gray, subulate to acicular, 2–4 cm. Scape 2–6 m. Inflorescences paniculate
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root-sprouting. Stems gray-green to brown, glabrate (diffusely branched from bases, brittle). Leaves (vegetative stems) persistent, gray-green; blades broadly
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tightly involute to flat, usually glabrous, sometimes scabridulous abaxially, gray-green, lax to curled at maturity. Inflorescences usually sparingly branched
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Synonyms: Aster bloomeri A. Gray Aster campestris var. bloomeri (A. Gray) A. Gray Symphyotrichum campestre var. bloomeri (A. Gray) G. L. Nesom Virgulus campestris
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bluish to brownish gray, thin, smooth, close [thicker, broken or shredded]; lenticels generally inconspicuous. Wood nearly white to light-brown, very hard
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uniflorus (Linnaeus) Endlicher Aphyllon uniflorum (Linnaeus) Torrey & A. Gray Thalesia uniflora (Linnaeus) Britton Treatment appears in FNA Volume 17.
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ascending, or frequently reflexed, 100–200 × 15–25 cm; blade light green to green or glaucous-gray, sometimes variegated yellow or whitish, especially in cultivated
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page 433. Plants very small, often in silky mats, green, yellow-green, or gray-green. Stems often erect-ascending, sparsely and irregularly branched, branches
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pollen blue-gray; ovary shallowly 4-grooved, puberulent; stigma exserted beyond anthers. Capsules 20–30 mm; pedicel 0–3 mm. Seeds light-brown or mottled
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speciesOsmunda regalis varietyOsmunda regalis var. spectabilis (Willdenow) A. Gray Manual ed. 2 600. 1856. R. David Whetstone, T. A. Atkinson IllustratedEndemic
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terrestrial. Rootstock nearly globose, 2-lobed. Leaves deciduous, dull green to gray-green or yellow green, pale toward base, spirally arranged, to 15 (–30) cm
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isolated and branching, lamellate ridges; girdle obscure. Microspores gray to light-brown in mass, 30–40 μm, tuberculate. 2n = 44. Phenology: Spores mature
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LAYOUT:treatment:TUOYAL familyUrticaceae genusPilea speciesPilea pumila (Linnaeus) A. Gray Manual, 437. 1848. David E. Boufford Common names: Clearweed Illustrated
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at base. Stems erect to ascending, often clumped but not matted, green or gray-green, terete, 10–110 (–120) cm, usually well-branched throughout, sometimes
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longer than sepals, dehiscing to 1/2 capsule length or less. Seeds light tan to light-brown, obliquely triangular with abaxial groove, (0.2–) 0.3–1.4 mm
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Trees, deciduous, to 30 m. Bark dark gray and smooth, becoming darker and irregularly fissured with age, inner bark light orange. Twigs reddish-brown, 1-2
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anthers light yellow, 0.5–1.2 (–1.5) × 0.3–0.7 mm; ovary 10–42 mm, subglabrous to sparsely mixed strigillose and glandular puberulent; style light yellow
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Stems: bark gray, peeling off in small white, gray, or brown flakes, inner bark light-brown; twigs green and puberulent when young, gray at maturity,
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habit, and generic name Aster Basionym: Aster sect. Sagittiferi A. Gray in A. Gray et al., Syn. Fl. N. Amer. 1(2): 179. 1884 Synonyms: Aster sect. Caroliniani Small
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Scilla angusta Engelmann & A. Gray Boston J. Nat. Hist. 5: 237. 1845 Synonyms: Camassia fraseri var. angusta (Engelmann & A. Gray) Torrey Quamasia angusta (Engelmann
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persistent fibers or nearly completely deciduous; petiole 0.3–9 mm; blade green to gray-green, narrowly elliptic, lanceolate, elliptic, obovate, or spatulate, 6–50
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Shrubs or trees, to 20 m. Bark gray-brown with orange tint, furrows shallow, ridges flat, broad. Branchlets redbrown to light greenish brown, glabrous or
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about 0.5 mm; blades 5-14 cm long, 1-2 mm wide, flat to loosely involute, light green. Inflorescences usually paniculate, occasionally racemose or spicate
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LAYOUT:treatment:TUOYAL familyOrobanchaceae genusCastilleja speciesCastilleja attenuata (A. Gray) T. I. Chuang & Heckard Syst. Bot. 16: 656. 1991. J. Mark Egger, Peter F
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3–6-locular; ovules 10–100+, sterile ones often present. Fruits capsules, brown to gray, hemispheric, obconic, ovoid, subpyriform, globose, cylindric, or urn-shaped
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spores, not intermixed with farina-producing glands. Spores brown to black or gray, rarely yellowish, tetrahedral-globose, rugose or cristate, lacking prominent
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America Association Trees, to 21 m; crowns spreading, broadly rounded. Bark light-brown to reddish with shallow fissures. Wood hard. Branches spreading to
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parietal placentae Synonyms: Eunanus Bentham Mimulus sect. Diplacus (Nuttall) A. Gray Treatment appears in FNA Volume 17. Treatment on page 426. Mentioned on page
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(1–) 1.5–2.5 (–5) m. Stem segments firmly attached, whorled or subwhorled, gray-green, cylindric to weakly clavate, 10–40 × 1.5–4 cm; tubercles very prominent
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Menziesia ferruginea subsp. glabella (A. Gray) Calder & Roy L. Taylor Menziesia ferruginea var. glabella (A. Gray) M. Peck Menziesia glabella Treatment appears
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scandularis A. Gray Proc. Amer. Acad. Arts 6: 530. 1865. Barbara Ertter, James L. Reveal Endemic Synonyms: Potentilla lycopodioides (A. Gray) Baillon ex J
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