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calyx, stamens as many as its lobes and alternate with them (opposite 
the petals when present), and a 2 to 4-celled ovary with mostly solitary 
ovules. 
* Fruit mostly fleshy and edible, with a single 1 to 3-celled hard stone. 
+ Petals wanting. 
1. Condalia. Style somewhat 2 or 3-lobed: ovules solitary in each carpel. 
. + + Petals present. 
2, Zizyphus. Petals hooded and clawed: flowers umbellately clustered: style 
bifid: ovules solitary. 
3. Microrhamnus. Petals hooded and clawed: flowers solitary: style notched: 
ovules solitary: leaves minute and revolute to the broad midrib. 
4. Berchemia. Petals clawless, acute, with incurved margins: style slightly 
2-lobed: ovules solitary. 
5. Karwinskia. Petals hooded, very short clawed: style slightly 2 or 3-lobed: 
ovules 2 in each carpel. 
** Fruit berry-like or dry, containing 2 to 4 separating seed-like nutlets. 
+ Fruit fleshy, free from the calyx. 
6. Rhamnus. Tube of calyx rather deep: petals small and clawless, sometimes 
wanting: style notched. 
7. Sageretia. Calyx shallow: petals hooded and clawed: style short and 3-lobed. 
+ + Fruit dry or nearly so. 
8. Ceanothus. Calyx-lobes petaloid: petals hooded and clawed: style elongated, 
mostly 3-lobed with spreading divisions: fruit partly inferior: inflorescence usually 
compound and thyrsoid. 
9. Colubrina. Chiefly differing from Ceanothus in habit and the collection of its 
less showy flowers in axillary umbel-like clusters. 
10. Adolphia. Nearly leafless green-stemmed plants: petals hooded: disk invest- 
ing but free from the lower half of the ovary: nutlets 3, perforate at base. 
1. CONDALIA Cav. 
Rigidly branching mostly spiny shrubs or small trees, with alternate 
rather small pinnately-veined leaves, and small flowers solitary or clus- 
tered in the axils. 
1. C. obovata Hook. Small tree, velvety-pubescent or at length glabrate: leaves 
often fascicled, 12 to 18 mm. long, petioled, spatulate to obovate-cuneate, mostly 
mucronate and entire: flowers few in each axil, very short-stalked: drupe subglo- 
bose, deep red, about 4 mm. in diameter, the short stout style disarticulating at 
about the middle: stigma 3-lobed.—From the Guadalupe to the Rio Grande and west 
to New Mexico. Known as “brasil” and ‘‘logwood,” and one of the common ‘* chap- 
arral” plants of western Texas, forming dense impenetrable thickets. Becomes 
small on the lower Rio Grande and along the coast. 
2. C. spathulata Gray. Shrub, glabrous or velvety: leaves less than 12 mm. 
long, short-pétioled, spatulate-cuneate, acute to emarginate: pedicels 2 mm. long: 
drupe obliquely obovoid, 4 mm. long: style slender, slightly 2-lobed, disarticulating 
near the top.—From the upper Colorado and Eagle Pass on the Rio Grande west- 
ward to New Mexico. <A very spinose plant. 
3. C. Mexicana Schl. Shrub, somewhat intermediate between the last two: 
leaves spatulate-obovate, acurzinate: drupe ellipsoidal, 6 mm. long, with a thicker 
stone.—On the lower Rio Grande, 
