Hmstonia. RUBIACE.E. 25 



plish without yellowish eye. — Sk. i. 191 ; Graj', Proc. Am. Aead. iv. 314. //. LinncF.i, var. 

 minor, Michx. Fl. i. 85. Iledijotis minima, Torr. & Gray, Fl. 1. c. in part, & II. cccrulea, var. 

 minor. — Dry or sandy soil, S. Virginia to Texas in the low country, also Illinois ? and Ten- 

 nessee ; fl. early spriiig. 



Var. pusilla. An inch or so high, more diffuse in age : leaves narrowly spatulate 

 (half a lino or a line wide) ; upper ones nearly linear : seeds smoother, with more open and 

 oval hilar cavity, and sometimes an elevated line within, as descrihed in Proc. Am. Acad. 

 1. c, a character not found in the larger and broader leaved form. Perhaps from tlie char, 

 this is the true //. patens, Ell. But we have it only from Louisiana (Hale, Drummond) and 

 Texas, Drummond and others; there passing into the other form. 

 H. minima, Beck. More diffuse, commonly scabrous : leaves spatulate to ovate : flowers 

 usually larger : catyx-lobes more foliaceous, oblong-lanceolate, sometimes 2 lines long, very 

 much longer than the ovary, equalling the tube of the purple or violet corolla ; lobes of the 

 latter 2 or 3 lines long: primary peduncles sometimes declined in fruit ? — Amer. Jour. Sci. 

 X. 262; Gray, 1. c. Iledyotis minima, Torr. & Gray, 1. c, in part only. — Dry hills, Mis- 

 souri and Arkansas to Texas, first coll. by L. C. Beck about St. Louis ; fl. early spring. 



* * Slender leafy-stemmed annual, with lateral horizontal peduncle^, and very small flowers: 

 corolla short-salverform : seeds cratei'iforiTi, with a medial liilar ridge. 



H. subviscosa, Gray. A span or two high, minutely viscidulous-pubesccnt, with rather 

 simple spreading branches : leaves narrowly linear, half-inch long : peduncle in first fork 

 and from all following nodes, rather shorter than leaves, hoi-izontally refracted in fruit : 

 calyx and capsiile a line high : corolla about same length, white : capsule didymous, only the 

 summit free: seeds 10 in each cell. — Proc. Am. Acad. iv. 314. Oldcnlandia subviscosa, 

 Wright in Gray, PI. Wright, ii. 68. — S. Texas, Berhindier, Wright. 



# * * Depressed or low-tufted species: corolla salverform or in one species funnelform: fila- 

 ments as well as anthers or smnmit of style reciprocally cxserted ipiite out of the throat: 

 J'ructiferous jyeduncles all .'Jtort and recurved. 



4— Annual, with small funnelform corolla : seeds open-crateriform : scarious stipules sctulosc- 

 ciliatc! 



H. humifusa, Gkay. Much branched from the root, repeatedly dichotomous, forming a de- 

 pressed tuft, jjuberulent and viscid : leaves linear-lanceolate, thickish (half-inch or more long), 

 mucronate : flowers in all the forks, crowded with the leaves at the ends of branchlets : calyx 

 4-parted into long setaceous-subulate spreading lobes : corolla pale purple or nearly white, 

 opeu-funncliorm, 3 lines long, hardly twice the length of the calyx ; the oblong lobes lauberu- 

 lous inside : capsule a line in diameter, globose-didymous, three-fourths free, only the base 

 girt by the short accrete calyx-tube. — Proc. Am. Acad. iv. 314 (not of Hemsl. Biol. Bot. 

 which is //. Wrightii). Hedijotis [Iloustonia) humifusa. Gray, PI. Lindh. ii. 216. — Sandy 

 or gravelly plains and hills, Texas, Wright, Lindheimcr, Reverchon, &c. : fl. spring. 

 •J— -1— Perennials, prostrate, witli naked stipules and elongated salverform corolla, flowering con- 

 spicuously in early spring; later growth producing through the summer inconspicuous cleistoga- 

 mous flowers, with shoi-t (yet mostly well-formed but unopeniug) corollas. 



H. rotundifolia, Micnx. Perennial by slender rootstocks or shoots, more or less creep- 

 ing, glabrous or with some hispiilulous pubescence : leaves somewhat orbicular, slightly 

 petioled, not longer than the internodes : peduncles 2 to 4 lines long or in cleistogamous 

 flowers very short : developed corollas bright white, with filiform tube (3 or 4 lines long) 

 longer than the oblong lobes : capsule more than half free, somewhat didymous : seeds 

 comparatively large (half-line in diameter), rough-scrobiculate, acetabuliform. — Fl. i. 85 ; 

 Pursh, 1. c. ; Ell. 1. c. Ilcdijotis rotundifolia, Torr. & Gray, Fl. ii. 38. Oldmlandia rotundi- 

 folia, Chapm. Fl. 180, the later "apetalous fruiting" flowers noted. — Low sandy ground, 

 S. r'ar. to Florida and Louisiana. 



H. rubra, Cav. Suffrutcscent and multicipital from a deep root, forming a depressed tuft 

 of 2 to 4 inches high, glabrous or mihutely puberulent, densely leafy : leaves narrowly 

 linear, an inch or more long, or earlier ones rather lanceolate and shorter : corolla " red " 

 or rather purple, sometimes lilac or varying to white ; tube half-inch to nearly inch long, 

 slender; oblong acute lobes 2 or 3 lines h)ng: capsule 2 lines wide, less high, didymous, fully 

 three-fourths free: seeds open-crateriform. — Ic. v. t. 474; Benth. PI. Hartw. 15. Iledyo- 

 tis (Iloustonia) rubra, Gray, PI. Fendl. 61. Oldenlandia (Iloustonia) rubra. Gray, PI. Wright. 

 ii. 68. — Stony or gravelly hills. New Mexico and Arizona. (Mox.) 



