cultivated. The species of Iris differ from members of other native genera of the Iridaceae in North America in three ways: 1) the sets of outer and inner perianth
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style base. Seeds 3, globose to ovoid, base often with tuft of fibrous hairs (vestige of funiculus); nutritive appendage from outer seed-coat (caruncle)
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(32 in the flora). Robinson, B. L. 1917. A monograph of the genus Brickellia. Mem. Gray Herb. 1: 3–151. Brickellia amplexicaulis, Brickellia atractyloides
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pistil 1, (2–) 5-carpellate, ovary superior, (2–) 5–10-locular; placentation axile [basal]; ovules (1–) 2–10 per locule, anatropous; style 1; stigma 1. Fruits
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coloration","petal fusion","petal orientation","petal pubescence","petal shape","petiole presence","pistil architecture","placenta arrangement","seed atypical
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or falling, mostly (3–) 5–80+ in 1–8 (–12+) series, distinct or connate, ovate or lanceovate to linear, unequal to subequal, outer mostly herbaceous, inner
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Calyculi 0 or of 1–22 bractlets. Involucres campanulate, cylindric, hemispheric, obconic, or turbinate. Phyllaries falling or persistent, 3–21+ in 1–2 series
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persistent, usually of fine to coarse, barbellulate to plumose bristles, sometimes of scales (scales often aristate) or awns, sometimes of bristles and scales
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in ± 2 series (strongly connate 2/3–7/8+ their lengths, seldom with outer margins distinct more than 1/2 their lengths, exceptions: T. aurea, T. pentachaeta
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because of its foliaceous perulae and base chromosome number of 12. Therorhodion probably is sister to the remaining genera of Rhodoreae (most of which belong
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sometimes borne singly. Calyculi 0 or of 1–15+ bractlets in 1 (–2+) series. Phyllaries persistent or falling, usually in 1–2 series, usually distinct, equal
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Species 150–250+ (25 in the flora). Within species of Bidens, leaves may be simple, 1-pinnately compound, or 1–3-pinnatisect or -pinnately or -ternately lobed
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pale green; nectary annular, 5 glands, or absent; pistil (1–) 3-carpellate; styles (1–) 3, distinct or connate basally, unbranched, 2-fid, or multifid
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eglandular); pappi usually persistent, of (1–) 4–20, distinct, ± erose scales in 1–4 series (equal or unequal, outer then shorter, scales usually fewer and/or
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conspicuous; unspurred outer petal 10-15 mm; inner petals 7-12 mm, claw 3-5 mm; nectariferous spur 1/2-3/4 length of petal spur; style 3-4 mm; stigma roughly
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semihomostylous (one whorl of anthers at level of stigmas, other proximal or distal), or homostylous (all anthers at level of stigmas); petals yellow, white, pink
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Gaillardiinae). Lundellia 1: 17–26. Bierner, M. W. 2001. Taxonomy of Hymenoxys subgenus Picradenia and a conspectus of the subgenera of Hymenoxys (Asteraceae
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usually 3-locular. Seeds usually not tailed. North America and south temperate areas of the world The relationships of both the perennial and annual species
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(basal) or sessile (usually appressed to ascending); blades usually 1-nerved, sometimes 3-nerved or 5-nerved, mostly linear to ovatelanceolate, margins entire
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sometimes stipitate-glandular. Pappus bristles usually in 2, rarely 3 series (shorter outer setiform scales rarely present, inner bristles usually strongly
7 KB (635 words) - 21:33, 29 July 2020