(58 PLANT.?; WRIGHTIAN-E. VI. 



Anotis, and Houstonia, with their purely loculicidal dehiscence," constituting " a 

 natural genus, which is the Hedyotis of Torrey and Gray's Flora." Moreover, the 

 name Oldenlandia should have been preferred by the botanists who combined the 

 whole into one genus, inasmuch as it has forty-four years' priority over Hedyotis, 

 and ten over Houstonia ; and Bentham has rightly restored it for the present genus. 



O. (Houstonia) rubra. Hedyotis rubra. Gray, PI. Fendl. p. 61. Stony hills, 

 from Santa Barbara to the copper mines. New Mexico ; July. (1119.) 



O. (Houstonia) humifusa. Hedyotis humifusa. Gray, PI. Lindh. 2. j). 216, Sf 

 PI. Wright, p. 82. On the Limpio ; June. 



O. ANGUSTiFOLiA (Houstouia angustifolia, Michx.), var. = Hedyotis stenophylla, 

 var. parviflora, etc.. Gray, PL Wright, p. 81. Rocky hills, near Eagle Springs; 

 June. (1390.)* 



MiTRACARPiuM BREYiFLORUM (sp. uov.) : aunuum, glabriusculum ; caule erecto 

 subtetragono ; foliis lanceolatis utrinque acutis sessilibus ; stipulis parce hispidis ; 

 calycis laciniis 2 majoribus lanceolato-subulatis corolla subduplo longioribus, 2 

 hyalinis multo minoribus. — Mountain ravines and hill-sides, near Santa Cruz, So- 

 nora; Sept. (1120.) — Stems 2 to 6 inches high. Leaves about an inch long, 

 li to 3 lines wide, usually four subtending the terminal capitulum. Bracts 

 hyaline, setaceous, glabrous. Calyx almost glabrous ; the two large teeth canalicu 

 late, soon recurved-spreading, rigid, a line and a half long ; the two small ones re- 

 sembling interposed stipules, usually considerably shorter than the tubular-funnel- 

 form corolla, which is white, glabrous, and seldom a line in length. Dehiscence 

 and seeds as in M. Schizangium. — The shortness of the corolla and the shape of 

 the leaves appear to distinguish this from Bentham's M. lineare. 



Crusea Wrightii (sp. nov.) : annua ; caule subreverse hirsutulo tereti ; foliis 

 lanceolatis acutis hirtello-scabris nervis utrinque 3-4, floralibus 4-8 capitulum 

 laxiflorum terminale involucrantibus basi dilatatis et hispido-ciliatis ; calycis laciniis 

 subulatis corollse purpurea tubum subajquantibus. Prairies, near Santa Cruz, So- 

 nora; Sept. (1121.) — Stems 3 to 10 inches high, slender, terete, not in the least 

 angled, sparingly branched. Primordial leaves subrotund, small ; the others lan- 

 ceolate or linear-lanceolate, 12 to 20 lines long and 2 or 3 broad, narrowed at the 



* The following species was discovered in Texas several years since by Mr. Wright ; but I have not 

 until now received sufficient specimens to characterize it. 



Oldenlandia stjbviscosa {Wright, in herb.) : annua, minutim viscoso-hirtella ; caule tenello ramoso ; 

 ramis divaricatis ; foliis linearibus imisve sublanccolatis acutis basi attenuatis ; floribus terminalibus nunc 

 alaribus et pseudo-lateralibus solitariis pedunculo ajquilongis ; corolla minima (albida) hypocraterimorpha, 

 tubo calycem viscoso-hirtellum 4-fidum adcequante lobis obovatis longiore ; capsula didyma ad apicem 

 liberum transversim loculicida. — Between La Grange and Lockhart Springs, Fayette County, Texas, in 

 sandy post-oak woods ; May. — Plant 3 to 5 inches high, slender, divaricately branched, with a flower in 

 each fork. Leaves half an inch long, half a line, or the lowest a line, in width, sessile, mostly shorter 

 than the internodes. Stipules triangular or ovate, minute, scarious. Pedicels slender, 1| to 2 lines long, 

 often recurved or spreading in fruit. Lobes of the deeply 4-cleft calyx lanceolate-subulate, in fruit as 

 long as the tube. Corolla a line or a line and a half in length ; the limb 4-lobed. Capsule membrana- 

 ceous, subglobose, didymous, a line and a half in length, somewhat greater in width, loculicidal across 

 the top, which alone is free from the calyx ; the cells 10-seeded. Seeds meniscoid, smooth. 



