Primulacese. 
323 
472. Androsace. Androsace. V, 41. 
1. Ls very crowded, imbricated on the branches of a 
csespitose rt-stock, or those at the top of the branches 
spreading in a rosette and below these the dead branches 
of the past year. FIs solitary in the axils of the ls, 
sessile or pedicelled . . . , . . 2 
— Ls forming 1 or (in the perenn. species) several rosettes, 
from which springs the common peduncle bearing an 
umbel (sometimes through suppression with only 3 to 
1 fls), surrounded by an involucre ... 6 
2. Ls all imbricate in a cylindric column . . 3 
— Ls very crowded, looser than in the pis of the last 
section, forming rosettes at the tops of the branches 4 
3. Ls shortly pubescent with simple hairs. Cor. white 
with a yellow centre.—High Alp. 7 helvetica Gaud. 1817. 
— Ls gray-tomentose with very short stellate hairs. Cor. 
white or rose-coloured, the centre red. A. tomentosa 
Schl. Gaud.—High Alp.; southern chain of Wall, and 
near the lower Aar-glaeier, 7 . imbricata Lam. 1818. 
4. Ls covered with simple hairs, mixed with 3-forked 
hairs which are as long as the diameter of the pedi¬ 
cels. Cor. white, yellow in the centre. A. alpina Gaud, 
not Lam.—High Alp.; W. Y. 0. A. 7 pubescens Dec. 1819. 
— Ls covered with simple and (or) stellate hairs which 
are shorter than the diam. of the pedicels. Cor. rose, 
rarely white ........ 5 
5. Ls lanceolate or oblong-lanceolate. Pedicels shorter or 
hardly longer than the ls. Cor.-lobes not incised. A. 
pennina Gaud., A. alpina Lam.—High Alp., especially 
of eastern Switz. 7 glacialis Hopp. 1820. 
— Ls short, elliptic, rather obtuse. Pedicels about twice 
as long as the ls. Cor.-lobes distinctly incised. Aretia 
brevis Heg. —High Alp.; Tess. (Camoghe, Garzirola), 
and outside our boundaries on Mt. Legnone. 7 
Charpentieri Heer. 1821. 
6 (1). Perenn. pis, with barren rosettes ... 7 
— Ann. or bienn. pis without barren rosettes . . 11 
7. Peduncles, pedicels and cal. entirely glabr. Pedicels 
elongated. Fls fairly large, pure white; divisions of the 
cor. obcordate.—Jura (Belchenfluh at Reculet), Stock- 
horn chain in the Bernese Alp., always on limestone. 7 
lactea L. 1822. 
— Peduncles, pedicels and cal. hairy ... 8 
8. Ls narrow, linear-subulate, narrowed from the base to 
the top. Cor. rose-coloured.— Granite Alp.; W. Y. 7 
carnea L. 1823. 
— Ls oblong - lanceolate, or linear-lanceolate, narrowed 
towards the base. Cor. white or pale rose . . .9 
