LEAF INDEX. 23 



SIMPLE- ALTERNATE-ENTIRE. 



Climbing by stipules, steins greenish and bristly or prickly, veins curved. 



Sterns covered with straight bristles, leaves 5 to 9-nerved. Smilax hispida 86b 



Stems with stout scattered prickles, leaves 5-nerved, southern. Smilax 



qiiadrangulata 86a 



Climbing shrub, stem unarmed, leaves broadly ovate or lobed. Menispermum 



Canadense 5a 



Trailing or prostrate or reclining evergreens, slender and scarcely woody. 



Leaves ovate-cordate, larger than 1 in. x J in., stems bristly. Epigcea repens 46a 



Leaves ovate, very aromatic to taste, with a few low bristly- Gaultheria 



pointed teeth. pi-ocumbens 47 a 



Leaves obovate and obtuse, thick and leathery, stem much Arctostaphylos 



branched and reclining. Uva- Ursi 45a 

 See also (low heath-like shrub on northern lake shores, leaves 



shingled, very small). Hudsonia tomentosa 8a 

 Stems slender, leaves about ^ in. or less, leathery, revolute. 



Leaves about ^ in., ovate, acute, stems mostly < 1 ft. long. VacciniumOxycoecus 43i 



Leaves oblong, obtuse, smooth, pale beneath, stems 1-3 ft. Vaccinium 



long, swamps. macrocarpon 43 j 



Leaves obovate or oval, pale and black-dotted beneath, dry Vaccinium 



soil. Vitis-Idaa 43h 

 Leaves with wintergreen flavor, pointed, green and bristly 



beneath, bogs. Chiogenes hispidula 44a 

 See also (a low, spreading, far northern shrub, much 



branched, very revolute). Empetrum nigrum 52a 



Strongly revolute, white or rusty brown beneath low marsh evergreens. 



White glaucous beneath, narrow, mucronate, acid to taste. Andromeda polifolia 48a 



Rusty-woolly beneath, oblong, obtuse, twigs downy. Ledum latifolinm 51a 



Woolly or glaucous beneath, mostly narrow and pointed, often 

 revolute, length mostly > 2 in., bark very bitter, shrubs 



or a small tree. (Willows) 

 Petiole about J in. or longer, broad, pale and veiny beneath, 



a small tree. Salix rostrata . 76e 



Petiole about j in. or less, very woolly, somewhat revolute, 



often in dry soil. Salix humilis 76g 



Petiole short, young twigs and leaves beneath white-woolly, 



shrub in bogs. Salix Candida 76i 



Leaves small, nearly sessile, smooth, pale beneath, low bog 



shrub. Salix myrtilloides 761 



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