458 SUPPLEMENT. 



p. 331. (Probably not at all D. thlaspioides, Nees, of Central America.) Arizona, by 

 nearly all collectors. 



D. pseudoverticillaris, GRAY. Intermediate between the Platysteyice and the Spheno- 

 'stegias, annual, a foot high, branching and flowering from the base, nearly glabrous : lower 

 leaves ovate, acuminate (over an inch long), long-petioled ; upper much smaller, ovate- 

 elliptical, short-petioled, equalling the axillary subsessile leaf-like involucral bracts : these 

 at first spreading, deltoid-roundish, very obtuse or retuse, rarely mucronulate, abruptly con- 

 tracted at base, there commonly coalescent into a narrow cup : corolla not surpassing the 

 involucre: seeds muricate with minutely setuliferous processes. Proc. Am. Acad. xx. 308. 

 Valley of the Altar, N. W. Sonora, Mexico, not far below the boundary of Arizona, 

 Pringle. Apparently also collected, long ago, in the same district, by Thurber. 



SELAGINACE^E. 



1. LAG-6TIS, Gaertn. (Aaywt;, a hare, ovg, ear.) The earlier name for 

 Gymnandra, Pall., p. 332. Only one Northern species, viz. : 



L. glauca, G^DRTX. ; Maxim. Diag. PI. Nov. Asiat. iv. 1881, 296. Gymnandra Gmelini 

 and G. Stelleri, Cham. & Schlecht., and p. 332 : these specific names taken by Maximowicz 

 as varieties. 



VERBENACE^E. 



3. VERBENA, Tourn. 



V. BONARIENSIS, L. Before V. angustifolia, p. 336. A peculiar species, mostly tall, puberu- 

 lent, somewhat scabrous : stem square : leaves partly clasping, lanceolate, acutely serrate, 

 entire toward the base, reticulate-veiny and rugose : spikes dense and short, sessile and 

 crowded in dense pedunculate cymes : corolla small. Dill. Hort. Elth. 406, t. 300. Road- 

 sides near Charleston, S. Carolina. (Widely dispersed through warm countries; nat. from 

 S. Am.) 



V. littoralis, HBK. Next to V. angustifolia. Nearly smooth and glabrous, a foot or two 

 hi<rh, fastigiately branched above : branches terminating in single and rather slender spikes 

 of small purple or blue flowers : leaves lanceolate or the upper linear, more or less serrate, 

 rugose-veiny. Nov. Gen. & Spec. ii. 276, t. 137. Lower California, near the border of 

 San Diego Co., Orcutt. (Variable and wide-spread species of Mex. and S. Am.) 



V. remota, BENTH. After V. canescens, p. 336, from which exclude the syn. Procumbent 

 from a perennial or perhaps annual root : leaves mostly obovate in outline, once or twice 

 3-5-parted into short and narrow lobes : lower flowers sparse and in the axil of leaves (as in 

 the nearly related species), and most of the upper exceeded by the linear or subulate bracts : 

 fruit shorter ; nutlets granulose-scabrous at the commissure. PI. Hartw. 21 ; Watson, Proc. 

 Am. Acad. xviii. 136. V. Arizonica, Gray, Proc. Am. Acad. xix. 96. S. Arizona, Lemmon, 

 Pringle, the latter distributed as V. canescens. (Mex.) 



8. CITHAREXYLTJM, L. Nutlets occasionally one-celled, the seed 

 filling the cell. 



LYCIXSTRUM. Flowers solitary or subsolitary in the centre of axillary fas- 

 cicles of leaves : these remarkably small. 



C. brachyanthum. Slender, very much branched, puberulent : branchlets quadrangular: 

 leaves from linear-spatulate to obovate, quarter to half inch long, veinless, subsessile; pri- 

 mary ones articulated (in the manner of the genus) with the pulvinns or very short persistent 

 petiole, which after their fall often becomes spinesceut (but barely a line long) : calyx 



