VI. 



PLANT^E WEIGHTIAN^. 



67 



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New Mexico ; and near Santa Cruz, Sonora. (1111.) — Leaves In some forms larger 

 than in Wrighfs No. 234. 



G. PROLiFERUM (sp. nov.) : annuum, hispidulum ; caule tenero suberecto debili ; 

 foliis quaternatis oblongis internodiis multoties brevioribus ; pedunculis axillaribus 

 gracilibus apice florem unicum deflexum inter bracteas 2 foliiformes subsessilem 

 gerentibus nunc saepe proliferis 2-3-floris nunc quadrifoliatis*furcatis atque in 

 ramulum floridum extensis; corolla minima albida; fructu setis longis apice un- 

 cinatis hispidissimo. — G. virgatum, var. diffusum, Gra^^ Pl Wright.p, 80. — High, 

 rocky hills of the Pecos; June, 1851. Stony hills on the Rio Grande, near San 

 EHzario and El Paso ; March, Aprih (1112.) — Stems slender, at first'simple and 

 3 to 5 inches high, bearing one or two slender and sprcading peduncles, or simple 

 flower-branches of 4 to 10 lines in length, from each whorl; these are terminated 

 by a pair of leaf-like bracts subtending a deflexed flower, in the manner of G. vir- 

 gatum (only that has the peduncle extremely short) ; many of them are proliferous, 

 especially as the plant grows larger, and producc 2, 3, or even 4 flowers one above 

 the other in the same manner ; or some bear a whorl of leaves, and are cxtended 

 into an ordinary branch. The main stem soon branches from tho base, attains 6 to 

 10 inches in length, and becomes difiuse. The bristles of the fruit are longer than 

 in G. virgatum, their length equalling the diametcr of the cocci. 



G. Wrightii, Gray^ l. c. Crevices of rocks in ravines, at Santa Cruz, Sonora, 

 growing in dense branches ; Sept. (1113.) 



G. • Too young to determine. On the Limpio, with No. 1111. 



G. ASPERRiMUM, Graij, Pl. Fendl j). 60. Mountains, east of Santa Cruz, Sonora; 



Sept. (1114.) 



G. TRiFiDUM, fere y. latifolium, Torr. 8c Grai/, Fl. 2. p. 22. In springs, near the 

 Sierra de los Animos, New Mexico ; Oct. (1115.) — " Stcms 2 to 3 feet high, sup- 

 ported by club-rushes." 



BouvARDiA hirtella, H. B. K. ; Graij, Pl. Wright p. 80. Wild Rose Pass, on 

 the Limpio, and on Rock Creek; June. (1116.) 



B. Jacquini, H. B. K. l. c, var. ovata, DC. Prodr. 4:. p. 365 ? Mountain ravine 

 at Santa Cruz, Sonora ; Sept. — " A foot high. Flowcrs scarlet." 



B. ovata (sp. nov.) : herbacea 1 glabra ; foliis quaternis ternisve ovatis utrinque 

 acutis subpetiolatis penninerviis ; stipulis setaceis; cyma multiflora; calycis lobis 

 subulatis tubo subduplo longioribus tubo corollae intus pilosulo sextuplo breviori- 

 bus. — Mountain valley from San Pedro to Santa Cruz, Sonora; Sept. (1117.) 

 Stems a foot or more high, the base not seen, but probably herbaceous, simple, 

 leafy to the top. Leaves about the lcngth of the intemodes, l^ to 2y inches long, 

 an iuch or more in width, the margins, as also the lobes of the calyx, minutely 

 ciholate. Corolla an inch long, apparently purple, the lobes short, ovate, and 



obtusc. 



Oldenlandia (Ereicotis) acerosa. Hedyotis (Ereicotis acerosa), Graj/, PL 



Wright. p. 81. Limestone prairies, Turkey Creek, Texas, and westward; May. 



(1118.) Mr. Bentham, in Kew Joiir. Bot. i. p. 172, has pointed out the difference 



between " Hedyotis, with its fruit splitting into two cocci," and " Oldenlandia, 



