ROBINSON. — ALSINE^. 305 



ing only need be mentioned : var. rigidula (Alsine bijlora, var. rigi- 

 dula, Fenzl, I. c), with leaves erect, firm in texture and rather closely 

 imbricated ; and var. caknosula (Alsine bijlora, var. carnosula, Fenzl, 

 1. c), more flaccid, with leaves spreading and slightly flesliy. 



? A. laricifolia, L. Slightly woody and much branched at the 

 base : stems clothed with linear acicular secund ciliolate-denticulate 

 leaves : fertile branches erect, simple, 4-7 inches in height, 2-5-flow- 

 ered : sepals 3^ lines in length, linear-oblong, 3-nerved : petals oblong 

 or narrowly obovate, entire, twice as long as the calyx. — Spec. 424. 

 — An alpine European species at various times reported from Alaska 

 but still somewhat doubtful. Plants recently collected upon the Por- 

 cupine River by J. H. Turner certainly possess much resemblance to 

 the European plant, but differ in their shorter sepals and less leafy 

 stems. It is not unlikely that they may prove merely a tall and long- 

 petalled form of the preceding polymorphous species. 



** -M- Petals broadly obovate, much exceeding the calyx : Alaskan. 



A. arctica, Stev. Stems 1-3 iuches long, glandular-pubescent : 

 lower leaves narrow, linear, obtuse, slightly fleshy, crowded upon the 

 bases of the stems, nearly or quite glabrous, sometimes slightly ciliated 

 near the base, half a line in breadth ; the upper leaves a little broader, 

 and more or less distant : flowers solitary, terminal upon slender 

 glandular-pubescent peduncles, 5-7 lines in diameter: capsule 3i— 4 

 lines long, considerably exceeding the sepals : seeds minutely rough- 

 ened and slightly crested. — Stev. in DC. Prodr. i. 404 ; Cham. & 

 Schlecht. Linnoea, i. 54; Hook. Fl. Bor.-Am. i. 100 (excl. vars.) ; 

 Torr. & Gray, Fl. i. 181 in part. Alsine arctica, Fenzl, Verbreit. Alsin. 

 18, & Ledeb. Fl. Ross. i. 355 ; Regel, Ost-Sib. i. 338, 346 (excl. var. 

 breviscapa). — Western and Northern Alaska and adjacent islands. 



A. macrocarpa, Pursh. Stems 2-4 inches long, covered except 

 near the ends with the densely imbricated lance-linear obtuse conspic- 

 uously ciliated leaves ; the latter \ of a line broad : flowers solitary, 

 terminal, often exceeding \ inch in diameter : valves of the mature 

 capsule fully 6 lines in length; seeds slightly margined. — Fl. 318; 

 Cham. & Schlecht. Linnsea, i. 55; Hook. Fl. Bor.-Am. i 101 ; Torr. 

 & Gray, Fl. i. 182, 675. A. arctica, var. /3, grandijlora, Hook. Fl. 

 Bor.-Am. i. 100, t. 34, f. B. Alsine macrocarpa, Fenzl, Verbreit. 

 Alsin. 18 ; Regel, Ost-Sib. i. 354, t. 8, f. 6-9 ; A. arctica, var. 

 breviscapa, Regel, 1. c. i. 347. Regel's elaborate subdivision of 

 the Siberian forms of this species is not warranted in America in the 

 absence of abundant fruiting material. — Western Alaska near the 

 coast. (Siberia.) 



vol. xxix. (n. s. xxi.) 20 



