Seeds 1; testa thin, free from pericarp; embryo basal; endosperm abundant. x = 5–ca. 100. Worldwide Genera ca. 100, species ca. 5000 (27 genera, 843 species
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Involucres cylindric to campanulate or hemispheric, 3–9 mm diam. Phyllaries 20–40 in 2–5 series (mid usually green, sometimes red or purple), 1-nerved, ovate
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"hypanthium texture","stipule presence","torus presence","x chromosome atypical quantity","x chromosome quantity"]},{"rank":"family","name":"Rosaceae"
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pistillate, fertile; corollas (usually marcescent) yellow. Disc-florets 10–20 or 40–100+, bisexual, fertile; corollas yellow (hairy), tubes shorter than throats
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(on relatively long peduncles). Involucres crateriform to hemispheric, 12–40 mm diam. Phyllaries persistent, 15–50 in 2–4 series (spreading, recurved,
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bulbiferous, with flowers borne singly, in pairs, or in umbellike clusters of 2–40+ on peduncles or the lateral branches borne by the peduncle. Flowers protandrous
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rachillas tardily disarticulating between the florets. Spikelets with 4-25 (40) florets. Glumes entire, denticulate, toothed, or absent; lemmas with 5-17
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so on separate plants); sepals connate proximally into tube, (4–) 10–28 (–40) mm; tube green, whitish, and/or purplish, 10–30-veined, cylindric to campanulate
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yellow to olive green or dark-brown, ovoid to oblong, flattened, wings absent. x = 8, 9, 10. w United States, nw Mexico Species 49 (48 in the flora). Diplacus
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off) or falling, of 5–40, distinct or basally connate in groups, white to tan, wholly or distally plumose bristles in 1 series. x = 8. w North America,
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dioecious, sometimes andropolygamous), blooming before or at leaf emergence, 4–40 mm diam.; hypanthium 1.5–8 mm, exterior glabrous or hairy; sepals 5, erect
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Mentioned on page 255, 335, 337, 338, 339, 340, 341. Annuals (perennials), to 40 (–60) cm (taprooted or roots fibrous, fleshy and clustered in Lasthenia californica
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anthers 3. Caryopses smooth; pericarp thin; endosperm hard; hila round or oval, x = 9. Minn., Conn., N.J., N.Y., Wash., Ala., Mich., N.C., Pa., Puerto Rico,
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panicles, sometimes on the terminal panicles. Caryopses variously shaped, x = 10. Conn., N.J., N.Y., Md., Va., Wash., W.Va., Mich., Wis., Del., D.C, Ark
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faces glabrous or densely strigillose; pappi 0 or in 3–4 series, outer of 3–40 (sometimes obscure) linear to linear-lanceolate or triangular scales (0.2–1
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(Chamaenerion) and one major clade (sect. Epilobium) share the base number x = 18, the derivation of the diverse other gametic numbers (n = 9, 10, 12, 13
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appressed-hairy; pappi persistent, of 40–50 white to tawny, barbellate, apically attenuate bristles in 1–3 series. x = 4. w North America, n Mexico Species
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sometimes glanddotted; pappi persistent, of 35–40, barbellulate to barbellate (subequal) bristles in 1–2 series. x = 10. se United States Species 7 (7 in the
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sometimes tapering distally, (1–) 2–70 (–130) [–200] × (0.6–) 1–15 cm, less than 40 cm at flowering, skin hard and brittle (less often soft), tuberculate (especially
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of 25–40, tawny-white, barbellate, apically attenuate bristles in 1 series, sometimes plus shorter bristles or setae in a second, outer series. x = 9. w
9 KB (586 words) - 22:17, 29 July 2020