320 FLORA, 



ing in drying; aments densely many-flowered, about 3 cm. long; bracts oblong, 

 brown, villous; capsule 6-8 mm. long, ovoid-conic, densely white-villous. Lab. 

 Summer. 



48. Salix vestita Pursh. HAIRY WILLOW. (I. F. f. 1183.) A low shrub, 

 1-2 dm. seldom 5 dm. high, the twigs 4-sided, green. Leaves obovate, thick, 

 mostly retuse or emarginate at the apex, slightly crenulate, narrowed or rounded at 

 the base, dark green and glabrous above, persistently tomentose-silky beneath, short- 

 petioled, 2-5 cm. long; petioles 4-8 mm. long, channeled, not glandular; aments 

 slender, stalked; pistillate 3-5 cm. long in fruit; capsules narrowly ovoid-conic, 

 sessile, densely silky-tomentose, about 6 mm. long. Lab. and Quebec to the N. W. 

 Terr, and Ore. June. 



49. Salix orbicularis Anders. ROUND-LEAVED NET-VEINED WILLOW. A low 

 shrub, closely resembling S. reticulata, but stems more purplish; leaves generally 

 more rounded, often subcordate at the base, purple or brown-veined, but most 

 easily distinguished by the broadly obovate bracts. Lab. to Alaska and Br. Col. 

 (S. reticulata of American authors, mostly.) 



50. Salix reticula"ta L. NET-VEINED WILLOW. (I. F. f. 1182.) Aprocum- 

 bent shrub, 5-3 dm. high, often sending out roots from the twigs, the young 

 shoots 4-sided, purple-green. Leaves elliptic or obovate, thick, obtuse, narrowed 

 or rounded at the base, obscurely crenulate or entire, slender- petioled, glabrous or 

 somewhat silky-pubescent when young, dark green above, not shining, glaucous 

 and strongly reticulate-veined beneath, 2-4 cm. long; petioles 8-20 mm. long, 

 channeled; stipules oblong, obtuse; aments terminal, long-stalked, dense; filaments 

 pubescent at the base; capsule ovoid-conic, tomentose, about 6 mm. long. Lab. 

 Very rare. Also in northern Europe and Asia. June. 



51. Salix purpurea L. PURPLE WILLOW. (I. F. f. 1180.) A slender shrub 

 or small tree, with purplish flexible twigs, maximum height about 3.5 m. ; branches 

 often trailing; bark smooth and very bitter. Leaves oblanceolate or spatulate, 

 acute, serrulate, narrowed at the base, short-petioled, glabrous, green above, paler 

 and somewhat glaucous beneath, 4-7 cm. long, 5-8 mm. wide; stipules minute; peti- 

 oles 2-4 mm. long, not glandular; aments appearing before the leaves, dense, 

 leafy-bracted at the base, the staminate about 2 cm. long, the pistillate 3-5 cm. 

 long, sessile or nearly so; filaments and sometimes also the anthers united, pubes- 

 cent; bracts purple, persistent; capsules ovoid-conic, obtuse, tomentose, 5 mm. 

 long. Sparingly escaped from cultivation in the Atlantic States. Native of Europe. 

 Also called Bitter, Rose and Whipcord Willow. April-May. 



Order 4. MYRICALES. 



Shrubs or trees, with simple leaves and small monoecious or dioecious 

 flowers in aments. Perianth none. Ovary i -celled ; style short; stig- 

 mas 2. Ovule erect, orthotropous. Endosperm none. Only one family. 



Family i. MYRICACEAE Dumort. 



._ 



Bay berry Family. 



Leaves alternate, mostly coriaceous and aromatic. Flowers solitary in 

 the axils of the bracts Staminate flower with 2-16 (usually 4-8) stamens 

 inserted on the receptacle ; filaments short ; anthers ovate, 2-celled, the 

 sacs longitudinally dehiscent. Ovary subtended by 2-8 bractlets ; stigmas 

 linear. Fruit a small drupe or nut, the exocarp often waxy. Seed erect. 

 Cotyledons plano-convex. Radicle very short. Two genera and 35 

 species of wide geographic distribution. 



Ovary subtended by 2-4 bractlets; leaves serrate or entire, estipulate. i. Myrtca. 



Ovary subtended by 8 linear persistent bractlets; leaves pinnatifid, stipulate. 



2. Comptonia. 



