BUCKTHORN FAMILY 61 



minal cymes or panicles. Calyx 4-5-toothed. Petals 4—5, inserted on the calyx, 

 sometimes wanting. Stamens 4—5, opposite the petals ; anthers short, versatile. Disk 

 fleshy. Ovary sessile, free from or immersed in the disk, 2-5-celled. Ovules solitary 

 in each cell, anatropous, ascending. Fruit a drupe, berry or capsule, often 3-celled. 

 Seeds with fleshy or rarely no endosperm ; embryo large ; cotyledons flat. 



A family of about 50 genera and 600 species, inhabiting the temperate and tropical regions. 



Fruit drupe-like; flowers 4-S-merous; petals sometimes absent. 



Nutlets 1 to each drupe; petals when present clawed. 1. Condalia. 



Nutlets 2-3 to each berry-like drupe; petals when present sessile or very short-clawed. 2. Rhamnus. 

 Fruit a 3-celIed capsule; petals distinctly clawed. 



Calyx-tube adherent to the lower part of the capsule; calyx-lobes deciduous. 



Pedicels and calyx glabrous; calyx-lobes petaloid. 3. Ceanothus. 



Pedicels and calyx tomentose; calyx-lobes not petaloid. 4. Colubrina. 



Calyx-tube investing the lower part of the capsule but not adherent, the lobes persistent. 5. Adolphia. 



1. CONDAlIA Cav. Anal. Ci. Nat. Madrid 1: 39. pi. 4. 1799. 



Small trees or shrubs with divaricate branches and often spiny twigs. Leaves alter- 

 nate, entire, with minute stipules. Flowers in sessile or short-peduncled axillary cymes. 

 Calyx deeply lobed. Petals when present clawed and hooded. Styles 2-3-notched or shal- 

 lowly lobed. Ovary free from the calyx and disk, incompletely 2-celIed. Fruit a drupe 

 with a single nutlet. [Name in honor of Antonio Condal, a Spanish physician.] 



A genus of about 10 species, inhabiting the warm temperate and tropical regions of America. Type species, 

 Condalia microphylla Cav. 



Petals none ; calyx-lobes persistent. 1 • C. globosa pubescens. 

 Petals present; calyx-lobes deciduous. 



Drupe beakless, 6-10 mm. long; plants canescent. 2. C. lycioides canescens. 



Drupe beaked, IS mm. long; plants glabrous. 3. C. Parryi. 



1. Condalia globosa var. pubescens L M. Johnston. Spiny Abrojo or Crucillo. 



Fig. 3103. 



Condalia globosa var. pubescens I. M. Johnston, Proc. Calif. Acad. IV. 12: 1087. 1924. 



Intricately branching shrub with short divaricate spiny twigs, minutely puberulent and brown- 

 ish-pruinose. Leaves narrowly spatulate to oblanceolate, 7-13 mm. long, 2-5 mm. wide, becoming 

 reduced to minute scales toward the spinescent tips, minutely puberulent or glabrate, thick, with 

 a few low broad veins; sepals deciduous; drupe obliquely ovoid, 4-5 mm. long, black and juicy; 

 pedicels about as long as or longer than the fruit. 



Desert slopes. Lower Sonoran Zone; Colorado Desert, at Mesquite Station and Picacho, southern California, 

 east to western Arizona and south to northern Lower California. Type locality: San Esteban Island, Gulf of 

 California, Lower California. March-May. 



2. Condalia lycioides var. canescens (A. Gray) Trelease. Gray Abrojo or 



Crucillo. Fig. 3104. 



Zisyphus lycioides var. canescens A. Gray, Wheeler Rep. 6: 82. 1878. 



Condalia lycioides var. canescens Trelease in A. Gray, Syn. Fl. N. Amer. V-: 403. 1897. 



Condalia divaricata A. Nels. Bot. Gaz. 47:427. 1909. 



Much-branched shrub, with pale gray-green bark, the ultimate branches divaricate, rigid and 

 spinescent, more or less canescent. Leaves oblong or oblong-elliptic, 5-15 mm. long, entire or 

 denticulate, more or less canescent, rather thin, finely net-veined; flowers in short-peduncled 

 umbels ; drupe ellipsoid, 6-10 mm. long. 



Usually in bottom lands. Lower Sonoran Zone; Colorado Desert, California, east to southern Nevada and 

 western Arizona, and south to Sonora and Lower California. Type locality: valley of the Gila River, Arizona. 

 April-July. Lotebush. 



3. Condalia Parryi (Terr.) Weberb. California Abrojo or Crucillo. Fig. 3105. 



Zisyphtts Parryi Torr. Bot. Mex. Bound. 46. 1859. 



Condalia Parryi Weberb. in Engl. & Prantl, Nat. Pflanzenf. 3^: 404. 1896. 



Arborescent glabrous shrub with the ultimate branches divaricate and spinescent. Leaves 

 fascicled on short spurs, elliptic-obovate, 8-20 mm. long, entire, glabrous and bright green on 

 both surfaces ; petiole slender, 2-5 mm. long ; flowers in small cymose clusters on short spurs ; 

 pedicels very slender, 8-10 mm. long; drupe broadly ellipsoid, 1-2 cm. long, usually distinctly 

 beaked, the pericarp dry and thin. 



Desert slopes. Lower Sonoran Zone; western edge of the Colorado Desert, San Bernardino County, Cali- 

 fornia, south to northern Lower California. Type locality: San Felipe Canyon, California. Feb.-April. 



2. RHAMNUS [Tourn.] L. Sp. PI. 193. 1753. 

 Shrubs or small trees with alternate pinnately veined deciduous or evergreen leaves. 



