104 TRTRANDRIA MONOOYNIA 



margin relrorsely aculeate. Flower-bearing branches axillary, ojyposite. Corelta 



brownish yell ate, often o-puited ; lobes acuminate. 



Hab. Gardens, and small lots : not common. Fl. /tity. Fr. Srp/. 



Obs. Thi* plant is very nearly aided to Galium. The large root affords a xulu- 

 kle red coloring matter ; and is occasionally cultivated, by eome families, a* ad* 

 atestic dye-stuff. There is one native species in the Southern Stales. 



71. DIODIA. L. DC. Prodr. 4, p. 561, 



iGreek, Dia y through, or by, and Odes, Way; from its growing along road bides j 



Calyx 2 or 4-toothed. Corolla funnel-form ; limb 4-lobed. Capsule 

 •bovoid, or obversely pyramidal, crowned with the persistent calyx, % ^- 

 cfelled, bipartite ; cells l-secded. 



Suffruticose : stems round, or quadrangular ; leaves opposite, connected at base 

 by a sheathing bristly-ciliate stipule; dowers small, axillary, sessile. Sat. Ord. 



PJO. Lindl. ClNCHONACKJK. 



1. D. TBHE8, Walt. Stem terete, diffuse, roughish pubescent ; leaves 



linear-lanceolate, sessile, serrulate on the margin and keel ; bristles of 

 the stipule longer than the fruit ; calyx 4-toothed. Beck, Bot. p. 161. 

 Spermacoce diodina. Mr. AvfU 1. p. 82. Muhl. Catal. p. 15. Pursh, 

 Am. 1. />, 105. JSTtUt. Gen. I. p. ( J4. Bart. Phil. Up. 8:3. Ell. Sh. 

 1. p. 189. W/\ Fl. 1. />. 170. f^'ttscf. Co//;/;. />. 80. f7oru/. CVa/r. 

 /;. 19, Eat. Man. p. 353. 

 Tkiiete Diodia. I'tilsfo— Button weed. 



Reel annual. S/e//i 4 to 19 inches high, diffusely branched, covered with a short 

 pubescence, and sprinkled with longer white bristly hairs; branches spreading, 

 lower ones procumbent. Leaves an inch to an inch and a half long, and about 

 one fourth of an inch wide, somewhat scabrous, margin and keel aculeate -semi. 

 late. Stipules membranaceous, fringed with 6 or 8 long bristles between the 

 leaves on each side of the stem. Flowers generally solitary, and opposite, in the 

 axils of the leaves. Calyx-segments lanceolate, acute (obtuse, Ton:), cdiatc 

 Corolla mostly pain red, minutely pubescent, Fruit somewhat qnadraftgul&r-obo* 

 void, bisulcate, hispid. 

 Hub. Sandy banks; roadside, from Strode'sMill to Brandy wine. FY. Aug. Fr.Oct. 



Obs. This plant is very abundant in the S. western parts of the county,— par- 

 ticularly along the Marlborough Street mail ; but 1 believe is scarce in the N. east- 

 orn portion. Three or four other species, as the genus is now constituted, occur 

 in the U. States. 



72. HEDYOTIS. L. Hook. Anu 1. p. 286. 

 [Gr. Ifedys, sweet, Ous, otos, Ear ; from a supposed virtue in curing deafuess.J 



Calyx 4-toothed, or 4-parted. Corolla tubular ; limb spreading, 4-lo- 

 bed. Capsule subglobose-didymous, half superior, 2-ceiled, 2-valvcd, 

 many-seeded, opening at apex transversely, or across the dissepiment. 



Herbaceous, or suffruticose at base: stem mostly quadrangular, dichotomous; 

 leaves opposite, connected at base by a short stipule / flowers axillary or terminal. 

 Sat. Ord. l l J0. Lindl. Cinchonace^s. 



1. H. cjbrulea, Hook. Stem erect, setaceous, dichotomous ; radical 

 leaves spatulatc-oval, stem-leaves oblanceolate ; peduncles elongated, 

 i -flowered ; corolla salver-form, lobes acute. Hook. Am. I. p. 286. 



