irregularly toothed, sometimes spinose, usually unevenly revolute, secondary-veins 4-6 on each side, apex rounded or subacute; surfaces abaxially densely to sparsely
7 KB (574 words) - 08:43, 30 July 2020
or biconvex, usually distally narrowed into a distinct beak, rugulose at 10X or smooth or finely reticulate at 10–30X. Tubercles usually obscure or absent
5 KB (452 words) - 01:27, 30 July 2020
page 214. Mentioned on page 208. Herbs, annual, 3–8 dm, monoecious. Stems usually single from base, then well branched from first reproductive node, appressed
7 KB (429 words) - 18:21, 29 July 2020
so (branches, when present usually less than 7–8 cm). Pedicels articulated in proximal 1/3, filiform, 5–13 (–17) mm, usually not more than 2–2.5 times as
9 KB (1,015 words) - 10:06, 30 July 2020
acute or subacute lobes directed downward, ± parallel to petiole, or slightly incurved inward), margins entire, normally flat, apex subacute or obtuse
11 KB (1,237 words) - 10:05, 30 July 2020
petiole), margins entire, flat, apex obtuse or subacute. Inflorescences terminal, occupying distal 2/3 of stem, usually lax and interrupted at least near base
9 KB (931 words) - 10:05, 30 July 2020
older gray or gray-brown, sometimes dark purple-brown; thorns on twigs usually few, straight to slightly recurved, 1–2-years old brown, purple-brown, deep
17 KB (1,102 words) - 13:45, 30 July 2020
1-stratose, recurved to revolute on both sides; apices muticous, acute, subacute to narrowly rounded-obtuse, entire, erose-dentate or denticulate-cristate
9 KB (829 words) - 06:52, 30 July 2020
ellipsoid, glabrous. Lower glumes usually shorter than 1.7 mm, up to 1/2 as long as the spikelets, 3-veined, subacute; upper glumes and lower lemmas subequal
7 KB (975 words) - 04:09, 30 July 2020
glabrous to sparsely farinose. Leaves nonaromatic; petiole 0.3–4.5 cm, usually shorter than leaves; blade distinctly 3-lobed, narrowly ovate to elongate
7 KB (760 words) - 09:31, 30 July 2020
minute, Y-shaped or cruciform, mixed with simple or forked ones. Stems usually several from caudex, rarely simple, erect to decumbent, unbranched or branched
8 KB (781 words) - 12:20, 30 July 2020
Treatment on page 550. Mentioned on page 527. Shrubs or trees, 40–80 dm, usually main trunk dominant. Stems: trunk bark buff to pale gray-brown, fibrous
8 KB (750 words) - 14:40, 30 July 2020
reddish, distally stramineous to green, thickly membranous, apex acute or subacute. Spikelets: basal spikelets absent; often proliferous, ovoid, terete, 3–10
9 KB (673 words) - 01:27, 30 July 2020
Inflorescences solitary, terminal, lax to dense spikes. Flowers few-to-many, usually resupinate (not resupinate in P. nivea), sometimes showy; petals entire
17 KB (518 words) - 05:23, 30 July 2020
to hard (or soft), cortex persistent, longer internodes 10–35 mm, scales usually persistent, 6–20 mm, membranous, sometimes slightly fibrous. Culms terete
16 KB (1,681 words) - 02:17, 30 July 2020
glabrous, with vertical rootstock. Stems usually ascending, rarely decumbent-ascending or suberect, usually producing axillary shoots below 1st-order
7 KB (785 words) - 10:06, 30 July 2020
present. Stems usually erect to ascending, sometimes decumbent or prostrate, unbranched or branched (usually distally). Leaves usually basal and cauline
85 KB (2,094 words) - 12:08, 30 July 2020
terminal and axillary, terminal usually occupying distal 1/5–1/3 of stem, rather dense or interrupted in proximal 1/2, usually broadly paniculate (distal branches
7 KB (827 words) - 10:06, 30 July 2020
Illustrator: Susan A. Reznicek Copyright: Flora of North America Association Culms usually aphyllopodic, without dead leaf remains at base, 20–60 cm. Leaf-blades 1–2
5 KB (527 words) - 02:04, 30 July 2020
hyaline margins, elliptic-oblanceolate, 2.6–4 × 0.7–2 mm, apex obtuse or subacute. Anthers 1.3–1.8 mm. Perigynia light green becoming dark-brown and glossy
5 KB (544 words) - 01:24, 30 July 2020