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Key to PrimulaView taxon page for Primula
(For a list of species in Primula, use the above link.) Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots. 1. Corolla 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. spreading  Oriented more or less perpendicularly to the axis of attachment; often, more or less horizontal. or erect  Upright; vertically oriented. , rounded; anthers free; 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). 1.5–3.5 cm; heterostylous ..... P. suffrutescens 1' Corolla lobes reflexed  Abruptly bent or curved downward or backward. , generally acute  Having a short-tapered, sharp tip, the sides convex or straight and converging at less than a right angle. ; anthers ± adherent into a cone; leaf (2)12–30 cm; homostylous 2. Stigma enlarged (>> style in width); anther connective wrinkled, dark maroon to black; filaments < 1.5 mm, free or joined by thin membrane but not fused into tube 3. Corolla tube generally covering anther bases; flower parts in 5s; anther tips acute; plant densely glandular-hairy ..... P. fragrans 3' Corolla tube not covering anther bases; flower parts in 4s or 5s; anthers tips truncate  Abruptly (not gradually) narrower or smaller at base or tip, as if cut straight across or nearly so. to obtuse  Having a short-tapered, blunt tip or base, the sides convex or straight and converging at more than a right angle. ; plant glabrous to glandular-hairy 4. Leaf 9–50 cm, linear-oblanceolate to oblanceolate; stem glandular-hairy; inflorescence glandular-hairy; flower parts in 4s or 5s; fruit circumscissile  Dehiscence, usually of a fruit (capsule), by a transverse line, the top coming off as a lid. or with valves, sometimes both on 1 plant ..... P. jeffreyi 4' Leaf 2–20 cm, linear  Elongate, with nearly parallel sides; narrower than elliptic or oblong. to linear-oblanceolate; stem glabrous; inflorescence glabrous to ± glandular-hairy; flower parts in 4s; fruit with valves ..... P. tetrandra 2' Stigma ± not enlarged (± = style in width); anther connectives smooth or wrinkled, yellow or dark; filaments 1–4 mm, fused into tube, or < 1.5 mm, free 5. Anther connectives smooth (to longitudinally wrinkled when dry); fruit circumscissile or with valves 6. Corolla 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. generally 9–14 mm, magenta to lavender; roots white, without bulblets  1. Small bulb generally produced at the base of a bulb. 2. Any small, bulb-like structure that propagates a plant, often in a leaf or bract axil. ; fruit with valves ..... P. pauciflora 6' Corolla lobe generally 5–9 mm, magenta to white; roots ± red, with many bulblets; fruit circumscissile ..... P. subalpina (2) 5' Anther connectives transversely wrinkled; fruit circumscissile 7. Leaf blade  Expanded portion of a leaf, petal, or other structure, generally flat but sometimes rolled, cylindric, wavy, or cupped. generally tapered  Gradually (not abruptly) narrower or smaller at base or tip. to petiole  Leaf stalk, connecting leaf blade to stem; sometimes more or less indistinct. , length generally > 2.5 × width; filament tube > 2 mm; connective dark, smooth or obscurely wrinkled (if leaf narrowed abruptly to petiole, then filament tube < 1.5 mm, connective dark, generally smooth) 8. Anther 5–9 mm, filament 0.5–1.5 mm, free or fused into tube; corolla lobe generally 7–20 mm ..... P. conjugens 8' Anther 3–4 mm, filament 2–3.5 mm, fused into tube; corolla lobe generally 5–9 mm ..... P. subalpina (2) 7' Leaf blade generally narrowed abruptly to petiole, length generally < 2.5 × width; filament tube 1–4 mm; connective dark, generally wrinkled 9. Leaf blade length generally < 2 × width; filament tube generally < 3 mm wide; root bulblets present at flower ..... P. hendersonii 9' Leaf blade length generally > 2 × width; filament tube generally 3–4 mm wide; root bulblets 0 ..... P. clevelandii 10. Anther connectives yellow; filament tube without yellow or white spot below each anther, sometimes all yellow ..... var. clevelandii 10' Anther connectives maroon to black; filament tube with or without yellow or white spot below each anther 11' Filament tube with yellow or white spot below each anther
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Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, https://ucjeps.berkeley.edu/eflora/ [accessed on ]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .
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