162 DICOTYLEDONOUS PLANTS. 



ed. Flowers in threes, white, verj minute. It varies with obo- 

 vate-cuneate leaves. SmcM CUacers. 



3. G. tinctorium Linn. .- stem diffuse, smoothish ; leaves linear, some- 

 what acute ; those of the stem in sixes ; of the branches in fours ; 

 peduncles terminal, elongated, mostly 3-flowered. 



HAB. Wet woods. N. S. June Aug. It- Stem weak, branch- 

 ing. Leaves very narrow. Carol white, mostly 4-cleft. Used 

 as a red dye. Dyer's CUavers. 



4. G. obtusum Big. : stem smooth, procumbent ; leaves in fours, ob- 

 lanceolate, obtuse, rough on the edge and midrib ; peduncles Blender, 

 3-flowered ; lobes of the corol acute ; fruit smooth, globose. 



HAB. Banks of streams. Mass. Big. July. 24- Stem much 

 branched, entire, smooth. Leaves very obtuse. Flowers white. 

 Plant larger and more open than G. tinctorium. 



5. G. asprellum Mich. : stem diffuse, very branching, aculeate back 

 wards ; leaves in fives and sixes, lanceolate, acuminate, their margins 

 and nerves aculeate ; pedicels short. 



HAB. Moist places. Can. to Virg. Jane, July. U-Stem 12 



feet high. Flowers white, minute. >^ '-><-, 



*** Fruit hispid. 



6. G. aparine Linn. : stem weak, branching, aculeate backwards ; 

 leaves 68 in a whorl, linear-lanceolate, mucronate, with the keel and 

 margin rough with reflexed prickles ; fruit with hooked bristles. 



HAB. Moist woods. N. S. June. .Stew 34 feet long. 

 Flowers white, numerous, on axillary and terminal peduncles. 



7. G. micranthum Pursh: stem very branching, divaricate, with re- 

 flexed prickles ; leaves short, lanceolate, mucronate, smooth, their mar- 

 gin and keel aculeate ; flowering branches divaricate ; pedicels sub- 

 JJ-flowered, hispid. 



HAB. Mountain swamps. Can. and N. J. July. H Flowers 

 white, and very minute. Fruit mostly 1 -seeded. Pvrsh. 



8. G. brachlatum Pursh : stem flaccid, elongated, brachiate-ramose ; 

 branches short ; leaves in sixes, oblong-lanceolate, acuminate, smooth, 

 their margin and keel setaceously-ciliate ; flower bearing branches long- 

 er than the whorls, divaricate and dichotoraous ; pedicels 2-flowered ; 

 fruit with hooked bristles. 



HAB. Woods and meadows. N. S. June Aug. If. Flowers 

 white. Pursh. Perhaps not distinct from G, aparine. 



9. G. triforum Mich. : stem procumbent, smoothish ; leaves in fives 

 and sixes, obovate-lanceolate, mucronate, glabrous, margin scarcely 

 ciliate ; flowering branches long, 3-flowered at the summit; flowers on 

 short pedicels ; fruit small, hispid. G. cuspidatum MM. EU. 



HAB. Moist woods. Can. to Car. July, Aug. !. Stem weak, 

 3 5 feet long. Flowers white, very small. 



10. G. puncticulosum Wick. : stem erect, very branching, scarcely 

 pubescent ; leaves in fours, ovate, obtuse, smooth, with pellucid dots ; 



