KUBIACEAE 1119 



lobes acuminate : fruit 6 mm. in diameter, but usually only one carpel developing, gla- 

 brous, slightly fleshy : endosperm moderately grooved, lunate in cross-section. 



In dry woods in mountainous districts, Pennsylvania to Georgia and Alabama. Spring and sum- 

 mer.— A form with more tufted densely hispid stems 3 dm. high and leaf-blades hispid on both surfaces, 

 is G. latifoliuin hispidifoliuni Small ; it "occurs on mountains along the boundary between Virginia and 

 Korth Carolina. 



8. Galium hispidulum Michx. Perennial. Stems diffusely branched, 1-6 dm. long, 

 decumbent at the base or prostrate, glabrous, or hispidulous, but not scabrous : leaves and 

 stipules in 4's, mostly equalling the internodes, 5-25 mm. long; blades elliptic-oblong, 

 very acute at both ends, cuspidate at the apex, rather thick, shining, cellular-papillose 

 and" nearly glabrous above, the lower surface pubescent and pellucid-punctate : flowers 

 few, on short stout pedicels deflexed in fruit, in clusters of 3's or 5's from the involucrate 

 whorls which are borne on short bracted lateral branches slightly exceeding the leaves : 

 corolla greenish white, 2 mm. broad ; lobes 4, acute and hairy : ovary minutely pubes- 

 cent : fruit 5 mm. in diameter, nearly smooth, rarely pubescent, baccate : endosperm deeply 

 grooved, deeply lunate in cross-section. 



In dry sandy soil, in the coastal plain, New Jersey to Florida. Spring and summer. 



9. Galium uniflorum Michx. Perennial. Stems smooth and glabrous, 3 dm. high, 

 decumbent at the base or erect, sometimes simple : leaf-blades linear, acute, 2.5-2.8 cm. long, 

 the margins scabrous, the lower surface punctate : flowers solitary or in pairs, on short 

 bracted axillary branches : corolla white : ovary glabrous : fruit baccate, dark-blue, mostly 

 pendulous, glabrous. 



In rich dry woods, South Carolina to Florida and Texas. Summer. 



10. Galium Claytonii IVIichx. Perennial. Stems erect or ascending, diffuse and 



weak when old, 15-60 cm. high, retrorse-scabrous on the angles, diffusely branched : 



leaves and stijaules commonly in 5's or 6' s ; blades linear-spatulate or spatulate-oblong, 8- 



15 mm. long, obtuse, cuneate at the base and nearly sessile, glabrous and dull, except the 



scabrous margin and midrib : flowers on rather short stright glabrous pedicels which in 



fruit are strongly divaricate, in terminal bracted clusters of 2's or o's: corolla minute, 



white ; lobes 3, broadly oval, obtuse : fruit small, glabrous : endosperm with the margins 



incurved forming a hollow sphere, annular in cross-section. 



In open marshes and ditches, Massachusetts to Michigan, Missouri, North Carolina and Texas. 

 Spring and summer. 



11. Galium tiiictorium L. Perennial. Stems 15-25 cm. high, the branches nu- 

 merous, several times forked, glabrous or nearly so : leaves and stipules mostly in 4's ; 

 blades linear-lanceolate, broadest below the middle, 15-25 mm. long, obtuse, cuneate at the 

 base, 1-nerved, glabrous, except the slightly scabrous margins and midrib, dull and dark- 

 green, not papillose : flowers few, in terminal clusters of 2's or 3's ; pedicels slender, 

 straight: corolla white, 2-3.5 mm. broad; lobes 4, acute: fruit rather small, 1 carpel 

 usually sterile, very smooth : endosperm as in the next preceding species. 



In damp shaded places and swamps, Canada to Michigan, Nebraska, North Carolina, Tennessee 

 and Arizona. Summer. — A form growing in sandy swamps from Virginia to Florida, with more slender 

 and diffuse branches, almost filiform strongly cellular-papillose leaves, minute bracts and open cymes, 

 is G. tiiictorium jiUfolium "^yiegnnd. G. tmctorium Floriddnum. Wiegand, of Florida, is a weak slender 

 decumbent forni, with slightly scabrous stems, linear-spatulate flaccid leaf-blades, occasionally axillary, 

 solitary flowers and rarely 3-iobed corollas. 



12. Galium Parisiense L. Annual. Stems diffusely branched and intertangled, 



15-30 cm. high, sparsely retrorse-scabrous on the angles : leaves and stipules in 6's (rarely 



5's or 7's), 5-8 mm. long ; blades linear or linear-spatulate, acutely cuspidate at the apex, 



attenuate at the base, scabrous on both surfaces, somewhat shining and cellular-papillose : 



flowers on short filiform glabrous pedicels, in terminal and lateral few-flowered leafy 



cymes : corolla very minute, white ; lobes 4, mostly obtuse : fruit 1 mm. in diameter, 



conspicuously papillose-roughened : endosperm very similar to that of G. triflorum, nearly 



spherical, the cross-section circular, groove very shallow, with a central ridge. [G. 



Anglicum Huds.] 



On roadsides and in fields, naturalized from Europe, in Virginia, North Carolina and Tennessee. 

 Summer. 



13. Galium aspr^llum L. Perennial. Stems 3-16 dm. long, weak and reclining, 



retrorse-scabrous, or ju-ickly, the branches numerous but short : leaves and stipules of 



the main stem mostly in 6's, much shorter than the internode, 1-2 cm. long ; blades 



oblong-spatulate, or elliptical, cuspidate, tapering below into a very short petiole, glabrous 



except the scabrous margins and midribs, 1-nerved : flowers very numerous, white, on 



short filiform pedicels in much-branched terminal and lateral leafy bracted cymes : corolla 



2 mm. broad ; lobes 4, acute : fruit small, 2.5 mm. in diameter, smooth and glabrous. 



In open swamps and moist thickets, Newfoundland to Ontario, Wisconsin, Nebraska and North 

 Carolina. Summer. Rough Bed Straw. 



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