CONVOLVULACE.E. 433 



13. ECHIDIOCARYA, Gray. 



E. Arizonica, Gray, p. lOO. The genus now restricted to this species, and characterized 

 accordingly. Collected in Arizona, also in atljacent Souora, Mexico, by Pruujle. 



12. (now 14.) AMStNCKIA, Lehm. 



A. intermedia, Fiscn. & Meyer, p. 198. To this belongs Echium Menziesii, Lehm., Pngill. 

 & Huok. Fl. ii. 89. Probably this most common species and A. spectabilis are one, differing 

 only in the size and length of the corolla. 



17. LITHOSPI&IIMUM, Tourn. P. 203, to first section add : — 



L. glabrum, Gray. A low species of an Old World type, somewhat like L. inrrassatuln, 

 branclied from the annual root, smooth and very glabrous, except some minute apjiressed 

 pubescence : leaves spatulate-linear : spikes of the inflorescence when evolute dense, bract- 

 less : flowers nearly sessile : calyx with spatulate-linear segments as long as the white 

 corolla, in fruit appressed to the axis, accrescent, upper portion foliaceous, the base indu- 

 rated, with midribs greatly thickened : nutlets oblong-ovate, somewhat triquetrous, opaque, 

 nearly smooth, the basilar areola rather small. — Proc. Am. Acad. xvii. 227. — Apache 

 Pass, S. Arizona, Lemmon. 



L. viride, Greene. (Of the group with habit of Onosmodinm to M'hich belongs L. discolor, 

 L. Palmeri, Watson, &c.) A foot or two high, paniculately branclied, finely sericeous- 

 pubescent, not at all hispid : leaves broadly lanceolate, somewhat canescent beneath : 

 corolla salverform (three fourths inch long), pale green, sericeou.s-pubescent outside, with 

 tube nearly twice the length of the linear sericeous-hirsute sepals, slightly contracted orifice, 

 and rounded oval lobes (only a line long) widely spreading: nutlets smooth and ivory- 

 white, not angled, an acute expanded margin around the scar. — Bot. Gazette, vi. 158. — 

 Mimbres Mountains, New Mexico, Greene. 



L. tuberosum, Rugee, p. 20.3. Exclude the Texan plants referred here (fruiting speci- 

 mens only). They belong apparently to Onosmodium Bf^ariense. 



L. multiflorum, Torr., p. 204. Flowers heterogone-dimorphous, both forms now known, 

 as also of the following species, which ranks next to it. 



L. Cobrense, Greene, 1. c. 157. Many-stemmed from a tap-root and a rosulate tuft of 

 radical leaves, canescently strigulose (greener in age) or appressed-hirsute, and the spatu- 

 late lower leaves hispid : cauliue leaves linear, obtuse, short : corolla half-inch high and 

 with ample equally broad li:nb. — Common from western border of Texas through New 

 Mexico and Arizona; first coll. by Wright, and wrongly referred to L. canescens, — from the 

 range of which this southwestern district is to be excluded. 



CONVOLVULACE^. 

 1. ipomc£:a, L. 



I. hederacea, Jacq., p. 210. A remarkable form, seemingly of this species, pcrliaps a 

 hybrid with /. jinrjinrrn, is 



Var. integriuscula, with ample leaves caudately acuminate, either entire or some 

 with salient lateral teeth. — Shell Islands, at the mouth of St. John's liiver, East Florida, 

 Cnrtiss. 



I. Thlirberi, Gray, p. 212, should be removed to the foot of p. 210 : for it proves to be of 

 the Pharhitis section, and normally with a 3-lobed stigma and 3-celled ovary (only by varia- 

 tion 4-celled) : corolla 2 inches long, with slender tube much longer than the funnelform limb 

 and throat, purple. — Proc. Am. Acad. xix. 90. — Coll. in flower in S. Arizona, Lemmon. 



28 



