TETRANDRIA MONOGYNIA. 317 



74. GALIUM. Bed-straw 



* Fruit smooth. % 



G. tiifidum: stem procumbent, scabrous downward; leaves linear, 

 obtuse, scabrous on the margin and mid-rib ; those of the stem in 

 fives ; of the branches in fours ; flowers in terminal fascicles ; pedi- 

 cels short ; corolla mostly 3-cleft. 



HAB. Wet places. June Aug. 1}.; stem much branched; leaven 

 broad-linear ; flower white, minute. 



b. latifolium : leaves obovate-cuneate. 



HAB. Wet places. 



G. tinctoriurn : stem diffuse, smoothish ; leaves linear, somewhat acute, 

 slightly scabrous ; those of the stem in sixes, of the branches in 

 fours ; peduncles elongated, mostly 3-flowered. 



HAB. Low grounds. July, %; stem afoot high, weak ; fl. white, 

 mostly 4-cleft. 



G. asprellum : stems diffuse, much branched, retrorsely aculeate ; leaves 

 in fives and sixes, lanceolate, acuminate, aculeate on the nerves and 

 margin ; pedicels short. 



HAB. Shady wet places. June July, 'ij.; stem I 2 feet high, very 

 leafy ; flower terminal, white. 



* * Fruit hispid. 



G. aparine : leaves 6 or 8 in whorl, obovate- lanceolate, hispid above ; 

 margin and keel prickly ; stem flaccid, retrorsely acuminate ; fruit with 

 uncinate bristles. 



HAB. Moist thickets. May June, <v) ; stem 3 4 feet long, procum- 

 bent or inclined ; flower white ; fruit uncinately hispid. 



G. triflorum ; stem procumbent, smoothish ; leaves in fives and sixes, 

 obovate-lanceolate, mucronate, scarcely ciliate on the margin ; flower- 

 ing branches elongated, 3-flowered at the extremity ; flowers pedicel- 

 late ; fruit small, hispid. 



HAB. Moist thickets. July Aug. 7J.; stem weak, 3 5 feet long} 

 leaves membranaceous, flowers branched, axillary, and terminal. 



G, pilosum: stem nearly simple, elongated, ascending, with remote 

 joints, hispid ; leaves in fours, oval, mucronate, very hairy on every 

 part, nerveless ; flowering branches elongated, nearly simple, 3-flow- 

 ered at the extremity ; fruit hairy. 



HAB. Dry woods. July Aug. 1}.; stem I foot high leaves obtuse, 

 punctate -flowers purple segments acute. 



G. circoezans : stem erect, smooth ; leaves in fours, oval, obtuse, 

 smooth ; margin and nerves ciliate ; peduncles divaricate, few-flow- 

 ered; flowers remote, subsessile; fruit nodding, with hooked bris- 

 tles. 



HAB. Rocky woods. June July, 1|.; stem I foot high branch, at 

 base leaves 3-nerved flower purp. 



G. lanceolatum : stem erect, very smooth ; leaves in fours, lanceolate 

 generally acute, smooth, 3-nerved; margin subciliate; peduncles 

 divaricate ; fruit sessile, nodding, covered with hooked bristles. 



HAB. Rocky woods. July, 1|_; stem 1 foot high leaves 2 in. long, 

 rnembrana. -flower purple. 



G. boreale : stem straight and erect, branched, very smooth ; branches 

 short ; leaves in fours, linear-lanceolate, generally obtuse, 3-nerved ; 

 margin involute and scabrous ; flowers in a terminal panicle, divari- 

 cate ; fruit minutely and uncinately hispid. 



