RUBIACEAE. 



VOL. III. 



18. Galium labradoricum Wiegand. Labrador 

 ]\Iarsh Bedstraw. Fig. 3945. 



Galium tinctorium labradoricum 'Wiegand, Bull. Torr. Club 

 24: 398. 1897. 



Galium labradoricum Wiegand, Rhodora 6: 21. 1904. 



Perennial, with very slender rootstocks ; stems weak, 

 smooth, slender, more or less branched, 2-12' high. 

 Leaves i'-f long, linear-oblanceolate, narrowed at the 

 base, becoming reflexed, scabrous on the margins and 

 midvein beneath; flowers solitary, about i" broad, or in 

 simple cymes ; corolla white, mostly 4-parted ; fruit 

 smooth, seed annular in cross-section. 



In mossy bogs, Newfoundland to Wisconsin, Connecticut, 

 western Massachusetts and New York. June-Aug. 



19. Galium trifidum L. Small Bedstraw. Small Lleavers. Fig. 3946. 



Galium trifidum L. Sp. PI. 105. 1753. 



G. trifidum var. pusillum A. Gray, Man. Ed. 5, 209. 1867. 



Perennial by slender rootstocks, very slender and weak; 

 stem ascending, 16' long or less, much branched and inter- 

 tangled; stem sharply 4-angled, rough; branches com- 

 monly in 2's; leaves in 4's, linear-spatulate, 2i"-7" long, 

 obtuse, cuneate at the base, i-nerved, dark green and dull 

 on both surfaces, scarcely papillose, the margins and mid- 

 rib retrorse-scabrous ; flowers small, on lateral or termi- 

 nal pedicels which are capillary and much longer than the 

 leaves, commonly two at each node or three terminal ; 

 corolla very small, white, \" long, trifid, its lobes broadly 

 oval, very obtuse; fruit glabrous; seed spherical and hol- 

 low, annular in cross-section 



Sphagnous bogs and cold swamps, Newfoundland to New 

 York, British Columbia, Ohio, Nebraska and Colorado. Europe 

 and Asia. Summer. 



20. Galium Claytoni Michx. Clayton's Bedstraw. Fig. 3947. 



Galium Claytoni Michx. Fl. Bor. Am. i : 78. 1803. 

 Galium tinctorium Bigelow, Fl. Bost. Ed. 2, 54. 1824. 



Perennial ; stem erect or ascending, more diffuse 

 when old, 6'-2 high; stem slender or sometimes quite 

 stout, sharply 4-angled, more or less rough, the diffuse 

 branches in 2's; leaves of medium size, 4"-8" long, 

 commonly in s's or 6's, linear-spatulate or spatulate- 

 oblong, obtuse, cuneately narrowed into a short petiole, 

 rather firm in texture, scabrous on the margin and 

 midrib, dark green and dull above, not papillose, dis- 

 colored in drying ; flowers in clusters of 2*s or 3's, term- 

 inal, provided with i or 2 minute bracts ; pedicels 

 straight, in fruit strongly divaricate, glabrous and rather 

 stout ; corolla minute, white, 3-parted, the lobes broadly 

 oval, obtuse; fruit glabrous; seed spherical and hollow, 

 annular in cross-section. 



Swamps, Quebec to New York, North Carolina, Michigan, Missouri, Nebraska and Texas. 

 May-July. 



