Flora of North America Association Trees, 10-18 m; crowns open. Bark light-brown to gray with shallow ridges and plates. Wood hard. Branches: young and old-growth
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cream, sometimes pinkish or light purplish tinged, internally pink or purple, sometimes white with purple veins, rarely light yellow, abaxial lip spreading
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deciduous, to 30 m. Bark dark gray or brown, hard, with deep V-shaped furrows. Twigs light-brown, 2-3 (-4) mm diam., glabrous. Buds light-brown, ovoid, (3-) 4-6
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variegatum subsp. thornei, Delphinium variegatum subsp. variegatum Torrey & A. Gray Fl. N. Amer. 1: 32. 183. , not D. variegatum Baillon 1883. Michael J. Warnock
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epidermis exfoliating, periderm shiny maroon or dark red, aging into light to dark gray or nearly black bark; short-shoots (usually predominant) 0.2–3 cm;
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containing 32 or 64 spores, not intermixed with farina-producing glands. Spores light to dark-brown, tetrahedral-globose, rugose, lacking prominent equatorial-ridge
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mm, tips mucronate, abaxial faces tomentose, adaxial green-glabrescent to gray-pubescent. Cauline leaves linear, 4–20 mm, flagged. Heads 2–6 in corymbiform
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Alsinoideae genusArenaria speciesArenaria benthamii Fenzl ex Torrey & A. Gray Fl. N. Amer. 1: 675. 1840. Ronald L. Hartman, Richard K. Rabeler, Frederick
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appressed-pubescent, 1-year old usually dull yellowish to greenish brown or gray-brown to light or dark tan; thorns on twigs variable, straight to slightly recurved
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mostly 1.5–2.5 cm, brown or gray, not glaucous; scales 3–4 pairs, smooth except for erect conic umbos, 2–4 mm. Seeds 2–5 mm, light to medium brown, sometimes
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Treatment appears in FNA Volume 3. Trees, to 12 m; crowns low, broad. Bark gray or light-brown, scaly and flaky. Wood weak, brittle. Branches unarmed, spreading;
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mound-forming, 0.1–5 m; burl absent; bark on older stems persistent, gray or red-gray, shredded or rough; twigs densely short-haired with longer gland-tipped
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beaked keel petal Basionym: Polygala sect. Rhinotropis S. F. Blake Contr. Gray Herb. 47: 70. 1916 Treatment appears in FNA Volume 10. Herbs, perennial,
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Basionym: Smelowskia californica A. Gray Proc. Amer. Acad. Arts 6: 520. 1865 Synonyms: Sisymbrium californicum (A. Gray) S. Watson Sophia leptostylis Rydberg
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speciesCirsium occidentale varietyCirsium occidentale var. coulteri (Harvey & A. Gray) Jepson Fl. W. Calif., 509. 1901. David J. Keil Common names: Coulter’s thistle
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Heliantheae) subtribe Helianthinae genusSimsia speciesSimsia calva (A. Gray & Engelmann) A. Gray Boston J. Nat. Hist. 6: 228. 1850. David M. Spooner Common names:
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rhynchos, snout, and spora, seed Synonyms: Dichromena Michaux Psilocarya A. Gray Treatment appears in FNA Volume 23. Treatment on page 200. Mentioned on page
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of North America Association Shrubs, 5–10 (–20) dm. Stems light reddish-brown, weathering gray and striate, stiffly divaricately to loosely branched, moderately
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subfamilyMalvaceae subfam. Byttnerioideae genusWaltheria speciesWaltheria detonsa A. Gray Smithsonian Contr. Knowl. 5(6): 24. 1853. Janice G. Saunders Illustrated
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140, 1. Biennials, 5–400 cm; taproots. Stems usually 1, thinly to densely gray or white-tomentose, sometimes ± glabrate; branches few–many, usually from
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