with large air cavities between the cross veins. Upon drying, the collapse of these air cavities results in the cross veins becoming very prominent, a condition
80 KB (3,349 words) - 15:29, 15 December 2020
petiolelike constriction), venation usually parallel, sometimes with evident cross-veins, occasionally divergent. Inflorescences (synflorescences) usually compound
35 KB (1,876 words) - 02:36, 30 July 2020
lanceolate, venation parallel, cross venation not evident, without arm or fusoid cells, surfaces without microhairs, not papillate, cross-sections non-kranz. Inflorescences
19 KB (1,548 words) - 02:55, 30 July 2020
present; blades usually linear, sometimes broadly so, venation parallel; cross-sections non-kranz, mesophyll nonradiate, adaxial palisade layer absent,
17 KB (872 words) - 03:12, 30 July 2020
linear to narrowly lanceolate, venation parallel, cross venation not evident, without arm or fusoid cells, cross-sections non-kranz, epidermes without microhairs
9 KB (822 words) - 02:52, 30 July 2020
lanceolate, venation parallel, cross venation not evident, without arm or fusoid cells, epidermes without microhairs, not papillate, cross-sections non-kranz. Inflorescences
45 KB (1,179 words) - 03:07, 30 July 2020
or rarely annual, rhizomatous or cespitose. Culms round or flattened in cross-section. Cataphylls often present at culm base. Leaves: sheaths open; blade
6 KB (363 words) - 00:56, 30 July 2020
absent; blades linear to narrowly lanceolate, venation parallel, cross venation not evident, cross-sections non-kranz, without arm or fusoid cells; epidermes
18 KB (1,356 words) - 02:45, 30 July 2020
blades linear to narrowly lanceolate, venation parallel, cross venation sometimes evident; cross-sections non-kranz, without arm or fusoid cells; epidermes
12 KB (1,001 words) - 03:20, 30 July 2020
sometimes solitary, terete, 3–5-angled or more, or strongly compressed in cross-section, spongy with internal air cavities and incomplete transverse septa
13 KB (1,127 words) - 02:15, 30 July 2020
ligules absent; blades keeled abaxially, flat, V, or inversely W-shaped in cross-section. Inflorescences terminal, rarely pseudolateral, 1st order subumbellate
7 KB (420 words) - 01:32, 30 July 2020
and diffuse, smooth or toothed adaxially, rarely with abaxial lamellae, in cross-section with a prominent arc of large diameter guide cells and an abaxial
18 KB (1,106 words) - 06:45, 30 July 2020
base, sometimes ending in a hyaline, occasionally toothed apex, costa in cross section with or without stereid bands, leaf cells usually smooth, sometimes
14 KB (515 words) - 06:54, 30 July 2020
central nut often reduced and flattened, or if solitary, then often rounded in cross-section, not winged, adjacent nuts not separated by internal cupule valves
8 KB (435 words) - 08:38, 30 July 2020
to sub-, 3-, or 4-angled in cross section, without carunclelike structure. > 71 71 Seeds terete or bluntly subangled in cross section (weakly dorsiventrally
36 KB (819 words) - 18:21, 29 July 2020
at apex. Leaves monomorphic or somewhat dimorphic [dimorphic]. Petiole in cross-section with 2 crescent-shaped vascular-bundles at base. Blade pinnate to
7 KB (310 words) - 00:34, 30 July 2020
and becoming ladder-fibrillose, membranous; blades V-shaped or M-shaped in cross-section when young, glabrous, sometimes papillose. Inflorescences racemose
16 KB (761 words) - 02:00, 30 July 2020
rostrate; peristome usually double; exostome teeth 16, external surface cross striate basally, papillose distally, sometimes bordered, internal surface
15 KB (450 words) - 07:51, 30 July 2020
buds often covered with small to large, resinous glands; pith triangular in cross-section. Leaves 3-ranked, occasionally nearly 2-ranked. Staminate flowers:
5 KB (331 words) - 08:39, 30 July 2020
lacking spines; vascular-bundles 1–several, roundish or crescent-shaped in cross-section. Blades 1–6-pinnate, without laminar buds. Indument on petioles,
15 KB (634 words) - 00:29, 30 July 2020
Petiole usually not articulate to stem, scales usually persistent at base, in cross-section with 2–many roundish bundles, or bundles 2 and lunate. Blade simple
15 KB (567 words) - 00:33, 30 July 2020
erect to spreading. Seeds narrowly ovoid, longitudinally ribbed, finely cross-ribbed. x = 17. sw United States, nw Mexico Species ca. 45 (26 species in
13 KB (1,202 words) - 13:01, 30 July 2020
leaves with at least narrow hyaline or white-hyaline band; blades V-shaped in cross-section when young, glabrous. Inflorescences racemose or, rarely, 1–2 branched
15 KB (529 words) - 01:49, 30 July 2020
"blade prominence","callus development","caryopse architecture or shape","cross-section architecture","culm architecture","culm duration","culm texture"
3 KB (884 words) - 03:08, 30 July 2020
tubercles, not or weakly reflexed, never hooked; nut 1 per cup, round in cross-section, not winged. x = 12. North America, Mexico, West Indies, Central
13 KB (1,271 words) - 08:47, 30 July 2020
more erect than sterile ones. Petioles with 1 vascular-bundle X-shaped in cross-section or with 2 vascular-bundles back-to-back and C-shaped. Blades extremely
8 KB (637 words) - 00:22, 30 July 2020
sheaths fibrous; sheath fronts membranous, mouth ciliate; blades V-shaped in cross-section when young, adaxial surface without 2 marginal veins more prominent
16 KB (801 words) - 01:21, 30 July 2020
prominently veined and becoming ladder-fibrillose, glabrous; blades V-shaped in cross-section when young, smooth or papillose. Inflorescences racemose, with 1–10
15 KB (557 words) - 02:02, 30 July 2020
specialized; perfect exostomes yellowbrown or brownish, external surface cross-striolate or sometimes reticulate proximally, papillose distally, margins
21 KB (586 words) - 07:42, 30 July 2020
phyllaries with black or dark purple cross walls > 6 5 Hairs on phyllaries with clear or reddish to reddish purple cross walls > 7 6 Leaves hirsute (apices
97 KB (2,063 words) - 21:58, 29 July 2020
sometimes absent; pseudopetioles sometimes present; blades with parallel veins, cross venation not evident; abaxial blade epidermes with microhairs and transversely
9 KB (719 words) - 02:55, 30 July 2020
341. 1754. Norman K. B. Robson Common names: St. John’s wort St. Andrew’s cross millepertuis Etymology: Greek hyper, above, and eikon, image, alluding to
13 KB (922 words) - 11:15, 30 July 2020
"blade prominence","callus development","caryopse architecture or shape","cross-section architecture","culm duration","culm texture","embryo quantity","epiderme
9 KB (1,015 words) - 03:17, 30 July 2020
basal sheaths not fibrous; sheath fronts membranous; blades M-shaped in cross-section when young, adaxial side of blade with 2 lateral-veins more prominent
16 KB (695 words) - 02:09, 30 July 2020
sparsely septate-nodulose, blades V or W-shaped, flat, or, rarely, round in cross-section when young; widest leaves 0.9–16 mm, mostly more than 4 mm, smooth
14 KB (621 words) - 02:15, 30 July 2020
yellowbrown or brownish, external surface ± reticulate proximally, rarely entirely cross-striolate, papillose distally, border ± widened at transitional zone in outer
12 KB (455 words) - 07:46, 30 July 2020
persisting more than a year; sheath fronts membranous; blades V-shaped in cross-section when young, glabrous. Inflorescences racemose, with (1–) 2–10 (–15)
11 KB (598 words) - 01:52, 30 July 2020
or dimorphic or trimorphic. Upright and lateral shoots round or flat in cross-section; leaves on subterranean parts flat, appressed, nonphotosynthetic
11 KB (459 words) - 00:34, 30 July 2020
weakly lobed. Ceanothus thyrsiflorus 32 Branchlets round in cross section (rarely angled in cross section in C. oliganthus). > 34 34 Sepals and petals white
15 KB (437 words) - 18:13, 29 July 2020
Styles 3-fid, sometimes to 2/3 2-fid; achenes trigonous, or subcircular in cross section, or sometimes mostly biconvex, smooth to prominently variously sculptured
37 KB (456 words) - 02:15, 30 July 2020
mm > 6 6 Fruits bluntly 5-angled in cross section Mirabilis greenei 6 Fruits ovoid or globose, not angled in cross section Mirabilis multiflora 7 Fruits
15 KB (526 words) - 09:38, 30 July 2020
"blade prominence","callus development","caryopse architecture or shape","cross-section architecture","culm architecture","culm duration","culm texture"
4 KB (1,003 words) - 03:09, 30 July 2020
basal sheaths not fibrous; sheath fronts membranous; blades M-shaped in cross-section when young, adaxial side of blades with 2 lateral-veins more prominent
9 KB (460 words) - 02:08, 30 July 2020
lenticular in cross section; tidal muds; mostly brackish waters. Sagittaria subulata 6 Fruiting pedicels 1.5–6.5 cm; phyllodia flattened in cross section; rarely
14 KB (539 words) - 00:58, 30 July 2020
prominent, large, resinous glands; pith circular to remotely triangular in cross-section. Leaves 2-ranked. Staminate flowers: perianth absent. Pistillate
4 KB (313 words) - 08:29, 30 July 2020
624. Plants acrocarpous, large. Stems stiff, erect, mostly unbranched, in cross-section with a cortical region of small, thick-walled cells, a parenchyma
7 KB (298 words) - 06:46, 30 July 2020
basal sheaths not fibrous; sheath fronts membranous; blades V-shaped in cross-section when young, proximal leaf-blades with lateral-veins equally prominent
9 KB (463 words) - 02:12, 30 July 2020
sheaths not fibrous; sheath fronts membranous; blades usually M-shaped in cross-section when young, adaxial side of blades with 2 lateral-veins more prominent
12 KB (663 words) - 02:07, 30 July 2020
often with adventitious stem roots above bulb. Buds usually rounded in cross-section, sometimes ± triangular. Leaves numerous, usually ± evenly distributed
37 KB (2,628 words) - 05:42, 30 July 2020
sheaths and leaves somewhat septate-nodulose; blades usually M-shaped in cross-section when young, sometimes channeled or involute, adaxial surface usually
13 KB (709 words) - 02:14, 30 July 2020