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Key to LeptosiphonView taxon page for Leptosiphon
(For a list of species in Leptosiphon, use the above link.) Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots. 2. Leaf lobes  1. A major expansion or bulge, such as on the margin of a leaf, sepal, or petal, or on the surface of an ovary. 2. The free tips of otherwise fused structures, such as sepals or petals; larger than teeth. 0 ..... L. floribundus subsp. hallii 2' Leaf lobes palmate  More than two structures or parts (e.g., veins, lobes, or leaflets) radiating from a common point in two dimensions (i.e., in one plane). 3. Leaf lobes generally 3; pedicel  Stalk of an individual flower in an inflorescence, or the corresponding structure in fruit. generally 1–6 mm ..... L. floribundus 3' Leaf lobes generally 5; pedicel 0 or << 1 mm 5. Corolla tube > calyx; leaf  Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets). lobes lance-linear; seeds > 2 mm ..... L. pachyphyllus 5' Corolla tube <= calyx; leaf lobes generally linear  Elongate, with nearly parallel sides; narrower than elliptic or oblong. ; seeds < 2 mm ..... L. nuttallii 6' Leaf, calyx densely hairy 8. Corolla not both salverform  Having a slender tube and an abruptly spreading, flat limb; often applied to a fused corolla. and in dense bracted heads 9. Flowers sessile  Without a petiole, peduncle, pedicel, or other kind of stalk. 11. Hairy ring inside corolla 0, filaments glabrous; corolla generally < calyx 12. Stem branches generally above base or 0; corolla tube << lobes; stamens exserted  Protruding out of surrounding structure(s) (e.g., stamens exserted from corolla). ; seeds 1 per chamber ..... L. harknessii 12' Stem branches at base; corolla tube >= lobes; stamens included  Not protruding out of surrounding structure(s) (e.g., stamens included in corolla). ; seeds > 1 per chamber ..... L. pygmaeus 11' Hairy ring inside corolla present or, if 0, then filaments hairy; corolla > calyx 14. Hairy ring inside corolla 0; filaments hairy at base 15. Stem branched at base; calyx membrane as wide as lobes; corolla veins obscure ..... L. filipes 14' Hairy ring inside corolla present; filaments glabrous (rarely hairy at base in Leptosiphon septentrionalis) 16' Corolla 4–15 mm; stamens attached above hairy ring 19. Stigmas 1–2 mm; corolla throat generally maroon; stamens attached at or above mid throat; SnJV, SnFrB, SCoRI ..... L. ambiguus 19' Stigmas <= 1 mm; corolla throat yellow; stamens attached at or below mid throat; NW, CaR, n&c SNF, n SNH, SnFrB, MP 8' Corollas both salverform (tube >> calyx) and in dense, bracted heads 21. Calyx membrane at least as wide as lobes 22' Bracts not white-ciliate 24. Leaf lobes oblanceolate; corolla lobes generally truncate  Abruptly (not gradually) narrower or smaller at base or tip, as if cut straight across or nearly so. or ± notched; s SNH ..... L. oblanceolatus 24' Leaf lobes linear to lance-linear; corolla lobes rounded; s SNH and elsewhere in s CA 25. Bract lobes not connected by translucent membrane; corolla tube glabrous outside; SnGb, SnBr, DMoj ..... L. breviculus 25' Bract lobes connected at base by translucent membrane; corolla tube hairy outside; s SNH, Teh ..... L. nudatus 21' Calyx membrane much narrower than lobes 26' Corolla tube generally > 10 mm, 2–6 × calyx 27. Calyx hairs sparse or 0 except on margins, nonglandular 28' Corolla lobes > 4 mm; stigmas < or > 1 mm 29' Corolla lobes 6–14 mm; stigmas generally > 2 mm 30. Corolla lobes generally 6–9 mm, rounded; leaf lobes spoon-shaped, tips rounded ..... L. rosaceus 30' Corolla lobes generally > 8 mm, often abruptly soft-pointed; leaf lobes narrowly oblanceolate to linear, tips pointed ..... L. androsaceus 27' Calyx hairs dense, glandular or not 31' Leaf, calyx lobes not needle-like; corolla lobes generally > 5 mm, yellow or otherwise colored, but not both < 5 mm and yellow 32' Corolla lobes >= 4 mm, tube generally > 14 mm 33. Corolla lobes > 5 mm wide, rounded, bright yellow; calyx lobes generally deltate  More or less equilaterally triangular, with the corners rounded or not. ..... L. croceus 33' Corolla lobes < 5 mm wide, not both rounded and yellow; calyx lobes generally narrowly lanceolate  Narrowly elongate, widest in the basal half, often tapered to an acute tip. 34. Tip of middle leaf lobe 1. A major expansion or bulge, such as on the margin of a leaf, sepal, or petal, or on the surface of an ovary. 2. The free tips of otherwise fused structures, such as sepals or petals; larger than teeth. rounded, generally > 2 mm wide at widest point; corolla lobes abruptly soft pointed or generally truncate, tube generally > 1 mm wide ..... L. latisectus 34' Tip of middle leaf lobe acute  Having a short-tapered, sharp tip, the sides convex or straight and converging at less than a right angle. , generally < 2 mm wide at widest point; corolla lobes rounded, tube generally < 1 mm wide ..... L. parviflorus
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Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, https://ucjeps.berkeley.edu/eflora/ [accessed on ]
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