Plantcs Lindheimeriana. 163 



February; just beginning to blossom. Stems a foot' long. 

 Leaves one or two inches broad ; the soft pubescence appear- 

 ing as if deciduous with age. Calyx deeply 5-cleft ; the 

 lobes half an inch long. The expanded corolla about two 

 inches in diameter. Stamineal column stellate-hairy. Styles 

 17- 18, clavate at the tip; the stigmas truncate rather than 

 capitate. Ovules two or three in each cell. Fruit not seen. 



355. Sidafilicaulis, Torr. Hf Gray, FL 1, p. 232. S. fili- 

 formis, Moricand, PL Nouv. Amer. p. 38, t. 25. High and 

 dry prairies and sunny declivities, New Braunfels, &c. June, 

 August. — Prostrate, in patches, producing very numerous 

 slender and branching stems from a perennial and somewhat 

 ligneous root. These, when young, are beset with long, 

 spreading hairs, which are so slender that they often escape 

 notice, and are also deciduous from the older stems. Hence 

 our Texan plant is doubtless the S. filiformis of Moricand, 

 gathered at Tampico by Berlandier. Moricand's name is a 

 little the earlier published ; but it appears from Steudel that 

 there is a prior S. filiformis of Jacquin, which has been over- 

 looked. 1 



(583.) S. physocalyx (sp. nov.) : caulibus e radice car- 

 nosa crassa plurimis decumbentibus ramosis strigosis ; foliis 

 carnosulis ovato-oblongis crenato-dentatis basi 5-7-nerviis 



» Sida anomala ,*. Mexicana, Moricand, I. c. p. 36, t. 24, also from Tampico, is 

 S. fasciculata, Torr. <$• Gray, Fl. I, p. 231, which has recently been gathered in 

 Western Texas, by Mr. "Wright. The corolla, in dried specimens, is pink or rose- 

 color, as is also said by Moricand, and the short, tufted stems spring from a stout pe- 

 rennial root. Another species, indicated by Dr. Engelmann, I know only from a 

 fragment, namely: — 



Sida heterocarpa, Engclm. Mss.: " stellato-pubescens ; caule erecto ramoso; 

 foliis basi subcordatis obtusis crenato-dentalis, inferioribus lanceolatis, superioribus 

 linearibus; tuberculo subbasi petioli subspinoso; petiolis brevibus slipulas setaceaset 

 pedicellas solitarias s. fasciculatassuperantibus; carpellis 5nigris divaricato-birostratis 

 apice pubescenlibus latere tenuiter rugulosis, dorso membrana tenui evanescente elau- 

 sis.— Road-sides, waste places, Houston, Texas, with S. spinosa. Annual ? Flowers 

 in August and September. Distinguished from S. spinosa by the narrower dentate- 

 crenate (not jerraU) leaves, and smaller black (not light brown) carpels, rugulose 

 (not lacunose-reticulated) on the sides, with a prominent point on the back, broader, 

 shorter, more divaricate, not erect beaks. The seed escapes through the back, not 

 through the regular opening at the top." 



