Order 67.— RUBIACEiE. 403 



ovate. Sts. very slender, forked, 3 to 5' high, each branch bearing a flower. Cor. 

 pale bluo, yellowish at tlio center, about 5" wide. May — Aug. (Hcdyot.s Hook. 

 Oldjnlandia, Gray.) 



fi. Mi v NOR Mx. Branches and ped. spreading with a wide angle; fls. smaller 



(3 to 4 ' wide). — The more common form in the S. States. Mar., April. (H 



patens Ell.) 



2 H. sarpyllifolia Mx. Ca?spitous; sis. filiform, procumbent ; lvs. roundish* 

 ovati. abrupt or subcordate at base, petiolate, ciholate ; ped. terminal, very long; 

 cor. lobes broad-oval. — U ? Springy places among the mts. cf Car. and Tenn. 

 Sts. very slender, weak, G to 12' long. Lvs. no larger than in No. 1 (of which 

 this may be but another variety). May — Jl. 



3 H. minima Beck. Glabrous, f imple cr diehotomously branching ; lvs. linear- 

 spatulati, much attenuated to the base ; ped. at first nearly radical, at length ax- 

 illary, often not longer than the leaves; sds. 10 to 15 in eaHi cell, oval, smooth, 

 coneavo on the face. — X 1 Prairie?, etc. Mo.. Tenn. to La. Very small and deli- 

 cate. 1 to 3' high. Lvs. about 5" by 1". Fls. rose color, nearly as large as in 

 No. 1, a. Mar.— May. (Hedyotis T. & G.) 



4 H. rotuiidifolia Mx. Procumbent, creeping, leafy ; lvs. roundish- oval, alrrupi 

 at base, petiolate ; fls. axillary, solitary, ped. mostly longer than the lvs.; caps. 

 emarginate, few-seeded. — 1( Sandy, damp places, S. Car. to Fla. and La. Forms 

 small patches. Sts. much branched, 2 to 5' long. Lvs. generally longer than 

 the internodes, 3 to 4" diam. Fls. white, about as large as in No. 1. Mar. — Dec. 



5 H. purpurea L. St. ascending, clustered, branching, 4-angled ; lvs. ovate- 

 lanceolate, 3 to 5-veined, closely sessile; cymes '.) to 7 -flowered, often clustered; 

 cal. seam, lance-linear, longer than the capsule — Mid. and W. States S. to Ala. 

 (Eufala), in woods and on river banks. A very delicate flower, about If high. 

 Lvs. 1 to 2' long, £ as wide. Cor. white, often tinged with purple. May — Jl. 

 (Hedyotis Hook.) 



6 H. loagifolia Gaert. Radical lvs. oval-elliptic, narrowed to each end; cauline 

 liu.'ar or lance-linear, 1-veined; fls. in small, paniculate cyme?. — 21 Dry hills, 

 Can. to Ga. and Ark. Much more slender than the last. Sts. erect, 5 to 12* 

 high, 4-angled, smooth or ciliolate on the angles. Lvs. 9 to 15" by 2 to 3", caul- 

 ine sessile, rather acute at each end, all smooth. Fls. 2 or 3 together on very 

 short pedicels, pale-purple, with deeper colored striae in tho throat. Jn., Jl. 

 (Hedyotis Hook.) 



/?. tenltifolia. St. very branching; lvs. very narrow; ped. filiform; fls. 

 smaller. (II. tenuifolia Nutt.) 



y ciliolata. Lvs. oblong-linear, rather obtuse, often ciliato ; branches mostly 

 erect. — Banks of rivers and lakes, N. Y. to Ohio and Ivy. Varies imper- 

 ceptibly into a. (II. ciliolata Torr.) 



7 H. angustifdlia Mx. Slender, tall, ftrictly erect; lvs. narrowly linear, 1- 

 veined; fls. very numerous, short-pedicelled, in compact, terminal eymules ; cai 

 lobes subulate; caps, obovoid or top-shaped. — 1[ Prairies and bottoms, 111. to La. 

 Sts. slightly 4-angled, nearly terete, 10' to 2f high, branching. Lvs. 12 to 18" 

 long, acute, attenuate at base. 1" wide. Cor. white, hairy inside, 2" long. Jn., 

 Jl. (Hedyotis stenophylla T. & G.) 



9. OLDENLAN'DIA, L. In memory of Oldenland, a German physi- 

 cian and botanist, who died at tho Cape of Good Hope.) Calyx 4 or 

 5-lobed, persistent ; corolla funnel-form, with a short tube, little longer 

 than the calyx, 4 to 5-lobed, stamens 4 to 5 ; style short or 0, stigmas 

 2 ; capsule wholly adherent to and inclosed in the calyx tube ; seeda 

 very numerous and minute (40 to GO in each cell.) — Herbs erect or 

 prostrate. Stip. with 2 to 4 subulate points each side. Fls. small, 

 axillary, white. 



1 O. glomerata Mx. Creeping Greek-head. St. assurgent, branching ; Iva. 

 ovate-lanceolate, pubescent, narrowed at the base into a short petiole, or sessile; 

 fls. glomerate in the axils and tcjrninal, cor. bLoncr than the leafv cal. teeth. — A 



