456 



RHAMNACEAE 



Fruit a capsule; calvx-lobos, petals and stamens a; petals clawed. 



Calyx-tube joined to base of ovary, its lobes at length deciduous; style not jointed; leaves 

 present. 



Calyx-lobes colored ; widespread chiefly cismontane or montane shrubs 3. Ceanothus. 



Calyx-lobes herbaceous ; rare and local desert shrub 4. Colubrina. 



Calyx-tube free from ovary, its lobes persistent in fruit; style jointed; leaves caducous (thus 

 commonly absent) 5. Adolphia. 



1. CONDALIACav. 



Ours shrubs with divaricate mostly spiny twi<rs. Leaves alternate, entire, with 

 minute stipules. P^lowers in small axillary umbels, sometimes reduced to a single 

 flower, sometimes developed into small panicles. Calyx deeply 5-lobed. Petals 

 present or none. Ovary free from the calyx and annular disk, incompletely 2- 

 celled, with 1 or 2 placentae and 1 or 2 ovules. 

 Fruit drupaceous, the style-base persisting. — 

 Species 10, North and South America. (A. 

 Condal, Spanish physician.) 



Petals present ; calyx deciduous ; ovary with 2 placentae. 

 Umbels or panicles peduncled; branches and spines 



puberulent 1. C. lycioides. 



Umbels sessile; branches and spines glabrous 



2. C. parryi. 



Petals none ; calyx persistent ; ovary with 1 placenta 



3. C. spathulata. 



1. C. lycioides Weberb. White Crucillo. 

 (Fig. 226.) Straggly branching shrub com- 

 monly 4 to 7 feet high, the branches regularly 

 armed with rigid slender often leafless spines 

 % to 21/4 inches long; branches and spines 

 whitened and puberulent, the flower-bearing 

 branchlets and the calyces finely tomentose; 

 shrub commonly leafless, the leaves when pres- 

 ent with narrowly elliptic blades 4 to 7 lines 

 long, very shortly petioled; flowers minute 

 (about 1 line broad); drupe subglobose or 

 somewhat elongated, 4 lines long. 



Arid hills, 50 to 2600 feet : hills on north side of Colorado Desert. East to 

 Texas, south to Mexico. Jan. 



Habit note. — In the Cottonwood Mts. Condalia lycioides is commonly an erect shrub about 

 4 to 6 feet high. At the Cottonwood Spring a very large individual was observed in 1928; its 

 crown was 12 feet high and, resting on the ground, had a spread of 24 feet. 



Locs. — Cottonwood Spr., Cottonwood Mts. (n. of Mecca), Jepson 12,614; Mammoth Tank 

 (Syn. Fl. l':403) ; Chuckwalla Bench, Schellcnger 64; Aztec Well, Chuckwalla Mts., L. J. Childs; 

 Purple Hills Pass, Colorado Kiver, Jepson 5295. 



Eefs.— CoNDAUA LYCIOIDES Weberb.; Engler & Prantl, Nat. Pflzfam. 3°: 404 (1895). 

 Zizyphus lycioides Gray, Jour. Bost. Soc. Nat. Hist. 6:168 (1850), type loc. betw. Matamoros 

 and Zapimi, Mex., Gregg. Z. lycioides var. canescens Gray; Eothrock, Bot. Wheeler 82 (1878), 

 tj'pe loc. Gila Eiver valley, Ariz., Eothroclc 331. 



2. C. parryi Weberb. California Lote Bush. Glabrous shnib 6 to 10 feet 

 high with flexuous branches and slender spines; branches and spines grayish or 

 reddish-brown ; leaves mostly fascicled on short spurs, the blades obovate to ellip- 

 tical, 4 to 8 lines long, on petioles 1 to 3 lines long; drupe elliptic to oblong, 6 to 7 

 lines long, shortly beaked, borne on a slender pedicel 4 to 5 lines long. 



Dry caiions and mesas, 1000 to 2500 feet : mountains on north and west sides 

 of the Colorado Desert. South to Lower California. Apr. 



Fig. 226. Condalia lycioides Web- 

 erb. a, flowering branchlet, X V2; l>> 

 fl., X 5; c, fr., X II/2. 



