316 RUBIACE^. Hedyotts, 



petioled, usually sparsely ciliate ; peduncles filiform, elongated ; corolla salver-form ; capsule 

 reniform-obcordate, free above the middle ; seeds roundish, scrobiculate. — Hook. fl. Bor.- 

 Am. 1. p. 286 ; Darlingt. fl. Cest. p. 104 ; Torr. ^ Gr. fl. N. Am. 2. p. 38. Houstonia 

 caerulea, Linn. sp. 1. p. 105 ; Bot. mag. t. 370 ; Pursh, fl. 1. p. 106 ; Ell. sk. 1. p. 192 ; 

 Bart.fl. Am. Sept. t. 34./. 1 ; Torr.fl. 1. p. 172 ; Bigel.fl. Bost. p. 53 ; Beck, bot. p. 242. 

 H. Linnaei, a. elatior, Michx. fl. 1. p. 85. 



Stems 3-6 inches high, branching from the base ; the branches very slender, at first mostly 

 erect, finally somewhat spreading. Radical leaves 3-5 lines long and about 2 lines wide, 

 almost hispid on both sides, as well as on the margin ; the upper ones smaller, much narrower 

 and nearly smooth. Peduncles 1-2 inches long in fruit. Flowers 4-5 lines long. Segments 

 of the calyx oblong, (distant in fruit, with the sinuses rounded.) Corolla blue or blue and 

 white, sometimes all white, with a yellow centre ; the lobes somewhat ovate and acute. 

 Capsule broader than long, more than half free from the calyx, dehiscent down to the calyx. 

 Seeds 8 - 15 in each cell. 



Grassy wet banks, and in woods. April - September. 



2. Hedyotis ciliolata, Torr. (Plate XLIV.) Fringed-leaved Bluets. 



Stems usually numerous and somewhat cespitose, at length spreading, nearly smooth ; 

 leaves rather thick, obscurely one-nerved ; cauline ones oblanceolate or linear-oblong ; the 

 radical and lowest cauline ones oval- or oblong-spatulate, tapering into a petiole, ciliate with 

 short rigid hairs ; cymules mostly 2 - 3-fiowered, in corymbose clusters ; peduncles and 

 pedicels short ; lobes of the calyx lanceolate-subulate, about the length of the nearly globose 

 capsule; corolla funnel-form. — Torr. in Spreng. cur. post. p. 40; DC. prodr. 4. p. 422; 

 Hook.fl. Bor.-Am. l.p. 286 ; Torr. ^ Gr. fl. N. Am. 2. p. 40. Houstonia ciliolata, Torr. 

 fl. 1. p. 174 ; Beck, bot. p. 2i3. H. serpyllifolia, Graham in bot. mag. t. 2882, not oi Michx. 



Stems 4-6 inches high, at first erect, at length spreading. Radical leaves in a spreading 

 circular tuft, 6-8 lines long, somewhat coriaceous ; the cauline pairs rather few and distant 

 (the lower internode often 2 inches in length), all of them ciliolate. Stipules broadly ovate, 

 obtuse. Flowers numerous, about one-third of an inch long, lilac or pale purple. Calyx- 

 segments about one-third the length of the corolla, linear-lanceolate. Capsule about one half 

 free from the calyx; the cells 8 - 10-seeded. 



Banks of rivers and lakes. Goat Island, Falls of Niagara {Prof. Hadley). On the Genesee 

 river, near Rochester {Prof. Dewey and Mr. J. Carey). Shore of Lake Ontario and on the 

 banks of Black river, Jefferson county {Dr. Knieskern). Fl. May - August. 



3. Hedyotis longifolia. Hook. Long-leaved Bluets. 



Smooth ; stems erect ; leaves linear and oblong-linear, acute or obtuse, tapering to the 

 base, 1-nerved, roughish on the margin, but not ciliate ; the radical ones narrowly oval or 



