CARYOPHYLLE^E 51 



petals longer than sepals, lanceolate, acute, nerveless, 

 lowermost leaves elliptical ; Carniola, rare. M. polygo- 

 noides, M.K. (ciliata } Scop.) ; petals broadly lanceolate, 

 obtuse, 3-nerved, sepals obtuse, leaves linear, crowded ; 

 frequent on wet rocks. M. bavarica, L. (Ponce, Fnzl., 

 dasyphylla, Brun.); very fragile, glaucous, petals longer 

 than sepals, leaves distant, apiculate, fleshy, stem 2-6 in. 

 long; wet rocks; Tirol, Styria, Pyrenees. M. trinervia, 

 Clairv. ; petals shorter than sepals, leaves 3-5 -nerved, 

 ciliate ; a common lowland plant. 



15. ARENARIA, L. 



Petals 4-5; stamens 8-10 ; styles usually 3; capsule 

 6-lobed; seeds without an appendage. Most species of 

 Sandwort are alpine plants with small white flowers. 



A. Petals twice as long as sepals ; leaves lanceolate- 

 subulate : A. grandiflora, L. ; leaves with a thickened 

 margin, I -nerved beneath; Jura, Tirol, Pyrenees. 



B. Leaves ovate or ovate-lanceolate; petals rather 

 longer than sepals : A . biflora, L. ; leaves nearly orbi- 

 cular, blunt, petals elliptical; moist rocks, high, local. 

 A. Huteri, Kern. ; leaves ovate-lanceolate, acute, hairy, 

 petals ovate; Southern Tirol. A. ciliata, L. ; leaves 

 ovate, ciliate; dry, rocky; Switzerland, Dauphiny, 

 Pyrenees. A. multicaulis, L., is a more procumbent 

 variety. 



C. Leaves ovate or ovate-lanceolate; petals shorter 

 than sepals : A . alpina, Gaud. (Marschlinsii, Koch) ; 

 petals ovate, sepals broadly lanceolate, acuminate, with a 

 scarious margin; very high; Switzerland, Tirol, Carin- 

 thia. A. Moritzii, Briigg. ; resembling the last, but petals 



