Comlulia. KIIA.MNACK.E. 403 



361 ; Weberbauer in Engl. & Priintl, Nat. Pflanzenf. iii. Ab. 5, 404 (including 

 Zizyphus of writers on North Anicritan botany). — Of the warmer regions of 

 the New World. 



♦ Apetalous: sepiiLs persistent: placenta 1 ; stvlcs slif,'htly 'i-.l-l-jlied. — § Eucoiidalin. 



C. Obovata, Hook. Small tree, velvety-pui)esceiit or at lenfjtii j,'lat>rate, tlie somewhat 

 aiigluti t\vij;s with white flaking epidermis : leaves drying brown or Idaek alMjve, at lengtii 

 glabrous, spatuhite to obovato, loug-euueate, mostly mucronate and entire, minutely huI>- 

 revolute, short-petioled, 6 to 12 lines long: Howers very short-stalked: drui)e subgloi»ose, 2 

 to 3 lines iu diameter ; the short stout style disarticulating at al)ont the middle; stigma 3- 

 lobed. — Ic. t. 287 ; Torr. & (iray, Kl. i. 685 : Gray, Cwu. 111. ii. 172. t. 1C,4 ; Treleasc, 1. c. 

 361 ; Sargent, Silv. ii. 25, t. 57 ; Weberbauer, 1. c. — Central and S. Texas. (Mex.) 



C. Mexicana, Scni.KtiiT. In asjjcct somewhat intermediate between the preceding and 

 following, mostly jiersistently dingy-velvety: leaves short-villous, obovate or oblancecdate, 

 acute below, almo.st sessile, about 3 lines long: flowers nearly sessile: drupe ellipsoidal, 2 

 to 3 lines long ; style short, disarticulating at abont the middle. — Linna-a, x.v. 471 ; Trelease, 

 1. c. 362. — S. Arizona. (Mex.) Specimens from Sau Julio Canon, Lower Calif., BrandHjee, 

 have elongated fruit 3 lines long, and large obovate mucronate to deeply emarginate long- 

 decnrrent glabrous leaves, as in the preceding, but pass into the type through Mexican speci- 

 mens, ('li'irj, no. 795. 



C. Spathulata, Ghay. Shrnl), mostly velvety, the twigs reddish with prninose incrusta- 

 tions: leaves typically smaller, narrowly spatulate, cuneate, acute to emartrinate. green on 

 both sides, glabrous or velvety, thick, with few broad veins, very short-petioled, 3 to scarcely 

 6 lines long : pedicels a line long : drujje obli(juely ovoid, 2 lines long, the slender style dis- 

 articulating near the einl ; stigma 2-lobed. — I'l. Wright, i.32, ii.27 ; Torr. Hot. Mex. Bound. 

 47 ; Trelease, 1. c. 362 ; Weberbauer, 1. c. — S. "W. Texas to Mesquite, California, Parish, 

 no. 793. (Mex.) 

 * * I'etals present : sepals deciduous: placentae 2; style bifid. Zizi/i>hus of most writers 



on North American botany. — § Coudaliopsis. 

 ■i- Umbels on a short peduncle : calyx fleshy : drupe beakless, with a thin-walled stone. 



C. Obtusifolia, Weberbauer, 1. c. Mastly rigid and spinose, somewhat pubescent to gla- 

 brate, the angled twigs with prninose flaking epidermis : leaves sometimes glabrescent, 

 ty])icallv thin and green, spatulate to elliptical or ovate-deltoid on long shoots, acute to 

 emarginate, entire or the broader forms unecpiaily and coarsely serrate or almost lobed, 3 

 to 12 lines long, mostly 3-norve(i : peduncle and pedicels each about a line long, mostly vil- 

 lous, like the calyx: drupe subglobose, 4 lines in diameter. — AVK/mn»s ? obtiisl/olius, Hook, 

 in Torr. & Gray, Fl. i. 685; Scheele, Linna;a, xxi. 595. Zizi/plius obtusifolia. Gray, Gen. 

 111. ii. 170, t. 163, & PI. Lindh. pt. 2, 168; Trelease, 1. c. 362. Puliurus Texanus, Scheele, 

 Linna^a, xxi. 594. — S. Texas. (Northern Mex.) 



C. lycioid.es, Wererbaiter, 1. c. Very rigid and spinose, the striate zigzag twigs whitened : 

 leaves subglabrous, rather thin, pale, oblong or occasionally ovate, obtu.se or emarginate, 

 u.'tuallv entire, 6 lines h)ng or less: drupes as iu the la.st or somewhat eluugated. — Zizifphtis 

 llirinldes. Gray, PI. Lindh. pt. 2, 168 ; Trelease, 1. c. 363. — S. W. Texas. (.Mex.) 



Var. canescens, Theleask, n. comb. More hairy, with green-gray twigs, the 

 mostly tomento.se leaves thicker and usually broader, elliptical to ov.ite-delioid, entire, 

 denticulate or somewhat .3-lol)ed. — Z/cy/i/n/.s li/cioide.;, var. rtincsniis, tJray in Hothrock, 

 Wheeler Rep. vi. 82; Trelease. 1. c 363. — S. E. Arizona to Mammoth Tank, California, 

 Prinfj/p & Parish, no. 1181. (Lower Calif.) In aspect of foliage connecting this species 

 with the preceding. 



+_ ^_ Umbels sessile: calyx-segments tbinner, le,*s keeled within: drupe larger, beaked, 

 nearly dry, with a thick-walled hard and bony kernel. 



C. Parryi, Wi:nERi5AtEi!, 1. c. Flexnously much branched and slender-spiny, glabrous 

 throughout: twigs less .sulcate, scarcely incrustcd : leaves mo.stly fa.scided, green, glci.>v«;y. at 

 length firm, reticulate-veiny, obovate to elliptical, 4 to 6 lines long, tapering to slender peti- 

 oles of e(jual length : pedicels very slender, 2 or 3 lines long, becoming twice as long and 



