Description of Native Vines 
83. White Clover. (Trifolium repens.) 
LEAF : trifoliate ; leaflets, obovate, apex deeply or slightly 
notched, slightly serrate; leaf- and flower-stems very long. 
FLOWER : white (corolla much longer than calyx), in small loose 
**heads”’ ; trailing, herbaceous. 
84. Halberd-leaved Tearthumb. (Polygonum arifolium.) 
LEAF: 2'-4', simple, alternate, entire, halberd-shaped ; plant- 
stem 4-angled and grooved, edges covered with reversed fine 
prickles. FLOWER: white or rosy (no corolla, colored calyx 4-5- 
lobed, stamens 6), few-clustered ; June—-September; weak, her- 
baceous, climbing by prickly stems ; in damp ground. (PI. VII.) 
85. Arrow-leaved Tearthumb. (Polygonum sagittatum.) 
LEAF: 1'-3', simple, alternate, entire, arrow-shaped ; plant- 
stem 4-angled, edges covered with reversed fine prickles for 
chmbing. FLOWER: as in 84; in damp ground. (PI. VIII.) 
86. Hop. (Humulus lupulus.) 
LEAF: 2'-4', simple, opposite, serrate, 3-7-lobed, roundish, 
base cordate, rough above. FLOWER: greenish, small, staminate 
and pistillate, clustered ; June-August; herbaceous, climbing, 
stems very rough-bristly, with reversed bristles or fine prickles. 
(Pl. VIII.) 
87. Bedstraw. Cleavers. (Galium aparine.) 
LEAF: 1-2’, simple, 6—8-whorled, entire, very narrow, base 
tapering, apex sharp, midrib and edge rough. FLOWER: white, 
small (corolla 4-parted, stamens 4), in small clusters ; June ; fruit 
prickly ; eastward; stem weak, 4-angled, edges covered with 
fine reversed prickles for climbing. (Pl. VIII.) 
88. Rough Bedstraw. Rough Cleavers. (Galium asprel- 
lum.) 
LEAF: %4'-24', simple, 4-6-whorled, entire, narrow, base and 
apex tapering, midrib and edge prickly ; flower as in 87; fruit 
small and smooth ; northward; stem rough-bristly. (Pl. VIII.) 
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