320 FLORA. 



ing in drying; amenta 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. 1. 1183.) A low shrub, 

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

 mostly retusc 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 silkv-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 reticulata L. Net-veined Willow. (I. F. f. 1182.) A procum- 

 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 W T illow. 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. 1. Myrica. 



( )v.iry subtended by 8 linear persistent bractlets; leaves pinnatiful, stipulate. 



2. Comptonia y 



