name Helianthus and Latin - ella, diminutive Treatment appears in FNA Volume 21. Treatment on page 114. Mentioned on page 65, 66, 67. Perennials, 20–150 cm
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barbellate, apically attenuate bristles in 1 (–3) series. x = 8, 7, 5, 13, 18, 21. North America, Mexico, West Indies, Central America, South America, e Eurasia
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L. Welsh Basionym: Pusillae Standley in N. L. Britton et al., N. Amer. Fl. 21: 50. 1916 Treatment appears in FNA Volume 4. Mentioned on page 355. Leaves
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pappus, alluding to membranous pappus scales Treatment appears in FNA Volume 21. Treatment on page 309. Mentioned on page 395. Biennials or perennials, to
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alternate. > 21 21 Leaf blade margins entire, sometimes margins of distal leaves proximally toothed; calyx lobes subulate; seeds 1–4. Melampyrum 21 Leaf blade
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root alluding to resiniferous rootstocks Treatment appears in FNA Volume 21. Treatment on page 93. Mentioned on page 65, 95, 100. Perennials, 10–45 (–100)
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distance to costa at insertion. Drepanocladus 21 Paraphyllia usually present; rhizoids often forming tomentum > 22 21 Paraphyllia absent; rhizoids rarely forming
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Mithridates Eupator, King of Pontus, 132–63 B.C. Treatment appears in FNA Volume 21. Treatment on page 462. Mentioned on page 459, 461, 470, 471. Perennials,
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Echinochloa 20 All leaves with ligules, ligules membranous or of hairs. > 21 21 Paleas of the lower florets inflated and indurate at maturity; lower and
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alluding to spiny tips of receptacular paleae Treatment appears in FNA Volume 21. Treatment on page 88. Mentioned on page 43, 64, 65. Perennials, to 140 cm
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Treatment appears in FNA Volume 9. Treatment on page 347. Mentioned on page 21, 351. Shrubs; unarmed. Leaves alternate, simple; stipules persistent or caducous
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names: Starry rosinweed IllustratedEndemic Treatment appears in FNA Volume 21. Treatment on page 81. Mentioned on page 77, 78, 82. Illustrator: Yevonn Wilson-Ramsey
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placenta, wings absent, rarely present. x = 7. North America, nw Mexico Species 21 (21 in the flora). The flowers in Collinsia resemble those of Fabaceae subfam
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Etymology: Ancient Latin or Greek plant name Treatment appears in FNA Volume 21. Treatment on page 366. Mentioned on page 3, 5, 255, 257, 364, 365, 375. Perennials
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Treatment appears in FNA Volume 9. Treatment on page 392. Mentioned on page 21, 395. Shrubs; unarmed. Leaves alternate, sometimes opposite, pinnately compound
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lanceolate, 5-21 × 1.5-6 cm, base cuneate, apex acute to acuminate. Flowers 2.5-5 cm diam.; peduncle 1-11 cm; bracteoles 3-6; tepals 21-33, red-maroon
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Treatment appears in FNA Volume 26. Treatment on page 307. Mentioned on page 20, 21, 58, 204, 303, 308. Herbs, perennial, from tunicate bulbs. Leaves basal; blade
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names: Sneezeweed Etymology: For Helen of Troy Treatment appears in FNA Volume 21. Treatment on page 426. Mentioned on page 415, 416. Annuals or perennials
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jepsonii 18 Leaf blade margins entire, dentate, denticulate, or serrulate. > 21 21 Leaf blade margins entire or remotely denticulate, teeth if present minute
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evolution in the Artemisia ludoviciana complex of the Pacific Northwest. Brittonia 21: 29–43. Keck, D. D. 1946. A revision of the Artemisia vulgaris complex in
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