GENUS I. 



VIOLET FAMILY. 



561 



42. Viola labradorica Schrank. Alpine Violet. Fig. 2964. 



V. labradorica Schrank, Denksch. Bot. Gesell 



Regensb. 2 : 12. 1818. 

 Viola punctata Schwein. Am. Journ. Sci. 5: 67. 



IO22. 



V. Muhlenbergiana var. minor Hook. Fl. Bor Am 

 1 : 78. 1830. 



_ Rootstock long, tapering, scaly above, some- 

 times branching; stems few, slender, 1-3- 

 leaved, erect or ascending, usually about 2% 

 high, bearing i or 2 petaliferous flowers on 

 long peduncles; lower leaves long-petioled, 

 blades orbicular, subcordate, glabrous, i'-f 

 wide ; upper leaves on shorter petioles with 

 smaller blades, more or less ovate, obtuse, 

 sparsely hirtellous on the upper surface; stip- 

 ules linear, attenuate, entire or with one or 

 two filiform appendages at the base; petals 

 deep violet; sepals lanceolate with round auri- 

 cles ; capsules subglobose, 2i" long. 



Alpine and subarctic; Greenland and Labrador, south to the high mountains of Maine New 

 Hampshire and New York. July-Aug. 



43. Viola adunca J. E. Smith. Hooked Violet. Fig. 2965. 



Viola adunca J. E. Smith in Rees' Cycl. 37 : No. 



63. 1817. 

 Viola longipes Nutt. ; T. & G. Fl. N. A. i : 140. 



1838. 

 Viola canina L. var. adunca A. Gray, Proc. Am. 



Acad. 8. 377. 1872. 



Glabrous or nearly so ; rootstock woody, 

 jagged and chaffy from the remains of former 

 leaves ; stems slender, several or many and 

 spreading, i*'-i2' high, bearing 1-3 axillary 

 flowers ; basal and lower stem-leaves long- 

 petioled, the blades ovate, obtuse, finely crenate, 

 subcordate or more or less decurrent at the 

 base, 5"-io" wide ; upper leaves short-petioled, 

 narrower, less rounded at the apex; stipules 

 linear, attenuate, sparsely spinulose-serrulate ; 

 flowers usually raised above the leaves on 

 peduncles ii'~4' long; petals violet to purple, 

 5"-/i" long, the lateral bearded ; spur rather 

 long, often curved upward or hooked; capsules 

 ellipsoid, 3^" long. 



Eastern Quebec, northern New Brunswick, 

 northern Ontario and in the mountains of Colo- 

 rado and California, north to Alaska. May-July. 



Sand 



44. Viola subvestita Greene. 

 Fig. 2966. 



Viola canina var. puberula S. Wats, in A. Gray, Man. 



Ed. 6, 81. 1890. 

 Viola subvestita Greene, Erythea 5: 39- 1897. 



Finely puberulent, stems several or many, spread- 

 ing, 2 f -6' long. Petioles longer than the blades ; 

 stipules linear-lanceolate with incised bristly teeth; 

 blades commonly ovate, i'-i' long, crenulate, obtuse, 

 subcordate ; peduncles slender, longer than the leaves ; 

 sepals narrowly lanceolate ; petals violet, spur about 

 3" long, usually straight and blunt, but often with a 

 sharp point abruptly bent inward ; cleistogamous flow- 

 ers and capsules often abundant in late summer ; cap- 

 sule 2*"-4" long; seeds dark brown, nearly i" long. 



Sandy and .sterile soil, Quebec and Maine, west to 

 Michigan, South Dakota, and the Rocky Mountains. 

 Referred in the first edition of this work to the Euro- 

 pean V. arenaria DC. May-July. 



36 



