Key to Androsace
View taxon page for Androsace
(For a list of species in Androsace, use the above link.)
Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.
1. Calyx ± 2(3) mm;
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).
blade 
Expanded portion of a leaf, petal, or other structure, generally flat but sometimes rolled, cylindric, wavy, or cupped.
abruptly narrowed to
petiole 
Leaf stalk, connecting leaf blade to stem; sometimes more or less indistinct.
..... A. filiformis 1' Calyx (2.5)3–6 mm; leaf blade
tapered 
Gradually (not abruptly) narrower or smaller at base or tip.
to petiole
2. Involucre bracts lance-linear to
lanceolate 
Narrowly elongate, widest in the basal half, often tapered to an acute tip.
, generally < 0.5 mm wide;
corolla >=
calyx; 2700–3600 m
..... A. septentrionalis 2' Involucre bracts lanceolate to
ovate 
Egg-shaped (i.e., widest below the middle) in two dimensions (i.e., in one plane), as a leaf.
, < 1.7 mm wide; corolla < calyx; < 1700 m
3. Calyx
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.
awl-like, tips
acute 
Having a short-tapered, sharp tip, the sides convex or straight and converging at less than a right angle.
, stiff;
peduncles 
Stalk of an individual flower borne singly, not in an inflorescence, or of an entire inflorescence, or the corresponding structure in fruit; the stalk subtending an involucre (e.g., in Asteraceae, Polygonaceae).
1–several
..... A. elongata subsp. acuta 3' Calyx lobes widely lanceolate to
deltate 
More or less equilaterally triangular, with the corners rounded or not.
, tips acute to
obtuse 
Having a short-tapered, blunt tip or base, the sides convex or straight and converging at more than a right angle.
, not stiff; peduncles generally 1
..... A. occidentalis
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