apiculate. Gametophytes brown to white, narrowly linear, unbranched, 2-20 × 1-3mm diam. x =30. Nearly worldwide, mainly tropical and subtropical Ophioglossum
9 KB (450 words) - 00:29, 30 July 2020
Seed-cones 2–3 × 1.3–1.6cm, on curved stalks 2.5–4.5 × 3.5–5mm; scales 45–55, margins entire, adaxial surface pubescent; bracts tipped by awn to 3mm, exceeding
6 KB (518 words) - 00:22, 30 July 2020
valves. x = 12. North America, Europe, Asia Species ca. 8-10 (3 in the flora, often interpreted as 2). As evidenced by United States breeding programs, all species
8 KB (435 words) - 08:38, 30 July 2020
× 4-8mm, lateral sepals 8-18 × 6-14 mm, spur 12-20 mm; petals of same color as sepals or whiter, lateral lobes 3-6mm, terminal lobes 5-8 × 2-4 mm, sinus
6 KB (608 words) - 08:37, 30 July 2020
cupule. Fruits: cupule 2-valved, enclosing 1 flower, valves irregularly dehiscing along 2 sutures, longest spines usually less than 10 mm; nut 1 per cupule
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5–1cm, usually on curved stalks 2–5 × 2–2.5mm, sometimes sessile on long-shoots; scales 10–30, margins entire, brown-strigose to tomentose at base; bracts
7 KB (631 words) - 00:26, 30 July 2020
ground level, 2.5-4.5 times length of trophophore; sporangial clusters 20-45 × 1-4 mm, with 10-40 pairs of sporangia, apiculum 1-2 mm. 2n =960. Phenology:
5 KB (493 words) - 00:26, 30 July 2020
thick-lenticular or asymmetrically thick-lenticular to compressed-globose, 1.2-2 times as wide as thick, not prolonged beyond seed; wall thick, smooth; margin
12 KB (526 words) - 08:22, 30 July 2020
cylindric, 7–12 × 3–4.5cm, olive-green, sessile, apex round; scales ca. 2.5–3 × 3–3.5cm, pubescent; bracts included. Seeds 8–12 × 3mm, body tan; wing about
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and reflexed over scales. Seeds 3–6 × 2–3mm, body brown; wing about twice as long as body, brown-purple; cotyledons ca. 4.2n =24. Habitat: Boreal and northern
10 KB (832 words) - 00:34, 30 July 2020
rather slender, pinkish brown, glabrous. Buds orangebrown, 3–6mm, apex rounded. Leaves (0.8–) 1.5–2 (–2.5) cm, 4-angled in cross-section, rigid, blue-green,
8 KB (785 words) - 00:31, 30 July 2020
ringed at base by a nectary, distally 2-branched with stigmatic papillae borne on adaxial face of each branch in 2 separate or contiguous lines or in 1
275 KB (5,940 words) - 15:30, 15 December 2020
yellow-tomentose for 2–3 years. Buds tomentose, scale margins ciliate. Leaves of short-shoots 2–3.5cm × 0.6–0.8mm, 0.4–0.6mm thick, keeled abaxially, 2-angled adaxially;
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Verbesina rothrockii, Verbesina virginica, Verbesina walteri Linnaeus Sp. Pl. 2: 901. 1753. , Gen. Pl. ed. 5, 384. 1754. John L. Strother Etymology: No etymology
12 KB (721 words) - 23:07, 29 July 2020
distinct; anthers basifixed; pistils 1, 2–3 (–4) -carpellate, fused, locule 1; style undivided or branches 2–3 (–4); stigma sometimes papillate. Fruits achenes
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pubescent, not resinous, margins entire, apex sharp-pointed. Leaves 2–6cm × 2–3mm, mostly 2-ranked, flexible, proximal portion ± straight; cross-section flat
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cross-section when young, sometimes involute, glabrous. Inflorescences racemose, with 2–5 spikes; proximal bracts sheathless or sheath less than 4 cm; lateral spikes
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appendaged, margins entire or emarginate to 2-fid, rarely pinnatifid [fimbriate or filiform]; stamens (2 or 4) 6 [8–24], in 2 whorls, usually tetradynamous (lateral
107 KB (3,718 words) - 12:07, 30 July 2020
open only at apex; perianth absent; stamens 1–3; styles deciduous or variously persistent, linear, 2–3 (–4) -fid. Achenes biconvex, planoconvex, or trigonous
80 KB (3,349 words) - 15:29, 15 December 2020
major veins; lodicules (0) 2-3, inconspicuous, usually without veins, bases swelling at anthesis; stamens usually 3, sometimes 1 (2) or 6+, filaments capillary
35 KB (1,876 words) - 02:36, 30 July 2020