ORDER 67. RUBIACE^E. 403 



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

 pale blue, yellowish at the center, about 6" wide. May Aug. (Hedyotis Hook. 

 Oldenlandia, Gray.) 



/?. 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. serpyllifolia MX. Casspitous; sis. filiform, procumbent; Ivs. roundish- 

 ovate, abrupt or subcordate at base, petiolate, ciliolate ; ped. terminal, very long ; 

 cor. lobes broad- oval. if ? Springy places among the mts. of Car. and Tenn. 

 Sts. very slender, weak, 6 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, simple or dichotomously branching ; Ivs. linear- 

 spatulate, 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 each cell, oval, smooth, 

 concave on the face. () Prairies, 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. rotundifolia MX. Procumbent, creeping, leafy ; Ivs. roundish- oval, abrupt 

 at base, petiolate ; fls. axillary, solitary, ped. mostly longer than the Ivs. ; 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 largo as in No. 1. Mar. Dec. 



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

 lanceolate, 3 to 5 -reined, closely sessile; cymes 3 to 7 -flowered, often clustered; 

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

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

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

 (Hedyotis Hook.) 



6 H. longifolia Gaert. Radical Ivs. oval-elliptic, narrowed to each end ; cauline 

 linear or lance-linear, 1-veined; fls. in small, paniculate cymes. If 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 stria} in the throat. Jn., Jl. 

 (Hedyotis Hook.) 



/?. TENUIFOLIA. St. very branching ; Ivs. very narrow ; ped. filiform ; fls. 

 smaller. (H. tenuifolia Nutt.) 



7 CILIOLATA. Lvs. oblong-linear, rather obtuse, often ciliato ; branches mostly 

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

 ceptibly into a. (H. oiliolata Torr.) 



7 H. angustifolia MX. Slender, tall, strictly erect; Ivs. narrowly linear, 1- 

 veined ; fls. very numerous, short-pedicelled, in compact, terminal cymules ; cal. 

 lobes subulate ; caps, obovoid or top-shaped. 2 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" v/ide. Cor. white, hairy inside, 2" long. Jn,, 

 Jl. (Hedyotis stenophylla T. & G.) 



9. OLDEN LAN 'DI A, L. In memory of Oldenland, a German physi- 

 cian and botanist, who died at the 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 ; seeds 

 very numerous and minute (40 to 60 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 GREEN-HEAD. St. assurgent, branching ; Iva. 



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



fls. glomerate in the axils and terminal, cor. shorter than thcdeafy cal. teeth. A 



