Alsinacese. 
97 
— Ls not petioled, linear or linear-filiform, nerveless. Pets 
longer [than the cal. ...... 2 
2- Seps acute, 4. Stas 8. Styles 2. Ls filiform. Peduncles 
10—25 mm. —Rocky, shady places in the Alp., subalp. 
and Jura; extending to the foot of the mountains. 5, 6 
muscosa L. 872. 
— Seps obtuse, 5. Stas 10. Styles 3. Ls linear. Peduncles 
5—8 mm. M. sphagnoides Bclib. (dwarf form).—Alp. 7 
polygonoides M. K. 378. 
107. Arenaria. Sandwort. X, 26. 
1. Ls lanceolate-subulate, acuminate, with a stiff awn, with 
a strong nerve underneath, thickened at the edges (by 
the lateral nerves). Pets twice as long as the cal.— 
.lura (Chasseron, Suchet); Saleve. 6,7 grandiflora All. 374. 
— Ls rounded, oval, or oblong-lanceolate, gen. with several 
nerves underneath ....... 2 
2. Pets rather longer than the cal. Perenn. pis . 3 
— Pets at least x /s shorter than the cal. Ann. pis. Type 
of A. serpyllifolia ....... 4 
3. Ls almost orbicular, very obtuse, shortly petioled. Fl.- 
stem short, 1—2-fid, rising from prostrate, stolon-like 
branches.—High Alp.; not common. 7 biflora L. 375. 
— Ls oval-lanceolate or oblong-lanceolate, sub-acute, drawn 
into a short petiole, ciliate. Stem 1 — many-fld.— b. densior 
(A. multicaulis Wulf.). Barren branches very numerous. 
Stem short 1—2-fld.—c. laxior (A. gothica Gfren. an Fr. ?). 
Barren branches rare, stem higher, several—many-fld.— 
Alp. and Jura; c. by the lac de Joux. 7 ciliata L. 376.*) 
4. The scarious edge of the inner seps at most V 2 as 
broad as the central herbaceous part. Low-growing pis, 
yellowish green; with rather longer hairs than in the 
following, fis more crowded and seps more finely acu¬ 
minate.—High Alp.; G. W. 7 Marschlinsii Koch. 377. 
— Scarious edge of the inner seps as broad as the central 
herbaceous part ....... 5 
5. Seps oval-lanceolate. Caps, ovoid, much swollen towards 
the base, bursting with a report when pressed. A. sphsero- 
carpa Ten.—Fields, walls; everywhere. 5 serpyllifolia L. 378. 
— Seps lanceolate, narrower than in the last. Caps, oval- 
oblong, bursting without noise when pressed. Pis more 
delicate in every respect than the last; fis smaller.— 
As the last and often accompanying it, especially in 
warm regions, but rarer . leptocladoa Guss. 379. 
*) The v. laxior = A. gothica Fr. According to Grenier (mem. soc. 
d'emul. Doubs 1873) and Vetter (oral communication) annual or annual and 
lasting the winter, and certainly a distinct species from ciliata. 
