296 PROCEEDINGS OP THE AMERICAN ACADEMY 



caudato-acuminatis capsulam depressam 5-lobam fequantibus ; carpellis 

 obtusis arista tenui molli per dehiscentiam loculicidam bisecta apicula- 

 tis; semine pubescente. — Tautoyuca, Mexico, Berlandier, 747, 2167. 



GAYA, HBK. By some oversigbt, Hemsley, in the Biol. Centr.- 

 Am. Bot. i. 102, has named Parry &, Palmer's no. 92 " Gaya sub- 

 triloba." It is the common Abutilon crispum. 



HORSFORDIA, Nov. Gen. inter Sphceralceam et Abutilon. Calyx 

 basi nudus. Carpella 8-12, coalita, tarde secedeutia, 3-ovulata, 1-3- 

 sperma (ovulis 2 superioribus stepe abortientibus, infimo resupiuato- 

 pendulo), matura diflformia ; pars superior stepius vacua mox accrescens, 

 membranaceo-scariosa, et bipartita in alas 2 parte infima firraiore grosse 

 reticulata (modo Sphceralcearum plurimarum) 2-3-plo longior. Discus 



the calyx, even the long ones not articulated except with the insertion. As far 

 as can be seen, the imperfect specimens from Key West referred by Chapman 

 to S. Lindheimeri belong here. 



S. Neo-Mexicana. a span to a foot high, diffusely many-stemmed from a 

 ligneous base or root, minutely puberulent, not cinereous : peduncles not articu- 

 lated, all short or very short : petals orange-yellow often changing to red : 

 mature carpels muticous or barely raucronulate. — 5. Elhottii, var.? Gray, PL 

 Wright, ii. 21. S. rhombifoUa, var.l microphjlla, Hemsl. Bot. Biol. Centr.-Am. i. 106, 

 small-leaved form. Eastern part of New Mexico, Wright, Thurber, Greene, &c. 

 S. Arizona, Lemmon. Chihuahua, Pringle. San Luis Potosi, Schaffner, Parry 

 & Palmer. 



S. Lindheimeri, Engelm. & Gray, PL Lindh. i. 5. S. ElUottn, with var. Tex- 

 ana, Torr. & Gray, FL i. 681, not of 231. Cinereous-puberulent, at least the lower 

 face of the leaves : slender peduncles about equalling the leaves, articulated 

 above the middle: petals yellow: carpels bicuspidate. Texas, extending into 

 adjacent Louisiana and adjacent Mexico ; first coll. by Berlandier. 



S. LONGiPES, Gray, PL Wright, i. 19 ; name several years prior in publication 

 to S. longipes, E. Meyer in the Flora Capensis. Well marked by its very long 

 and strict peduncles, with articulation a little below the summit, and muticous 

 carpels. It is wholly S. W. Texan. 



An outlying species, not quite of this group, is the following. 



S. Xanti. a foot or two high, woody below, scabro-puberulent : lowest leaves 

 ovate or subcordate and slender-petioled ; upper lanceolate ; all an iucli or less 

 long, dentate; uppermost small: peduncles surpassing the leaves, articulated 

 toward tlie summit : petals apparently white but perhaps yellow, almost an 

 inch long : carpels about 10, rugose and glabrate at maturity, bimucronulate, 

 the interior apex not inflexed. — S. ElUottii, var. 7 Gray, Proc. Am. Acad. v. 154. 

 Cape San Lucas, Lower California, Xantus. 



3. Species with calyx not at all angled : flowers in ours long-peduncled, and 

 petals violet. 



S. FiLiPES, Gray, PL Lindh. ii. 164, PL Wright, i. 19. Texan and Mexican; 

 of the S. paniculata group. 



