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FOC | Family List | FOC Vol. 15 | Primulaceae

7. Androsace Linnaeus, Sp. Pl. 1: 141. 1753.

点地梅属 dian di mei shu

Androsace erecta

Credit: Harvard University Herbaria

Herbs perennial, annual, or biennial, acaulescent, rarely caulescent with ascending or decumbent shoots from a caudex. Leaves forming a rosette, rarely alternate; rosettes solitary or clustered, forming lax mats or compact cushions. Inflorescences umbellate, rarely a solitary flower, with bracts. Flowers 5-merous, homostylous. Calyx campanulate to subglobose, shallowly to deeply lobed. Corolla white, pink, purple, or dark red, rarely yellow; tube usually ± inflated, ca. as long as to shorter than calyx; throat constricted; lobes entire or emarginate. Stamens included, inserted on corolla tube; filaments very short; anthers ovate, apex obtuse. Style not longer than corolla tube. Capsule subglobose, dehiscing nearly to base. Seeds few to many.

Approximately 100 species widely distributed in temperate regions of the northern hemisphere; 73 species native to China.


1 Leaves homomorphic, distinctly petiolate, dentate or lobed, rarely entire.   (2)
+ Leaves heteromorphic or, if homomorphic, sessile, entire.   (4)
       
2 (1) Leaf blade orbicular to reniform, cordate at base  

Key 1

+ Leaf blade elliptic, rarely orbicular, base rounded to cuneate.   (3)
       
3 (2) Plants perennial, fulvous pilose; leaves papery or subleathery  

Key 2

+ Plants annual or biennial, puberulent; leaves herbaceous  

Key 3

       
4 (1) Leaves alternate on erect stems   73 Androsace erecta
+ Leaves forming a rosette or overlapping on shoots or small branching caudices.   (5)
       
5 (4) Plants biennial or annual; leaf rosettes usually solitary  

Key 5

+ Plants perennial, forming dense cushions or lax mats consisting of many leaf rosettes borne on shoots or branching caudices  

Key 4

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