242 Rhamnaeeae 



coriaceous, elliptic-oblong, acute or obtuse, entire or denticulate, 

 3-5 cm. long; flowers in small umbel-like clusters, 5-merous ; 

 petals small, ovate, emarginate; stamens exserted ; fruit globose, 

 8-10 mm. in diameter. 



Common in the chaparral belt of all our mountains. Commonly called 

 wild coffee. 



4. R. Californica tomentella (Benth.) Brew. & Wats. Leaves 

 tomentose beneath, the margins revolute, entire, otherwise as in 

 the type. 



The more common form in the mountains, especially in the interior region. 



2. CEANOTHUS L. California Lilac. 



Unarmed or spinescent, often arborescent shrubs, with 

 alternate or opposite leaves, and small but showy white, 

 blue or purple usually fragrant flowers, in often long- 

 peduncled dense axillary or terminal clusters. Calyx 

 5-lobed. Petals 5, hooded, long-clawed. Ovary im- 

 mersed in the disk and adnate to it at the base, 3-lobed. 

 Disk adnate to the calyx. Style short, 3-cleft. Fruit 

 somewhat 3-lobed, separating at maturity into 3 nutlets. 



* Fruit hornless, sometimes keeled or crested; stipular base not 



enlarged; leaves alternate. 

 ■*- Leaves not glandular-toothed. 



1. C. integerrimus II. & A. Tall, loosely branching and 

 sometimes arborescent with green or at length somewhat brownish 

 branches, slightly angled when young, not at all spinescent; 

 leaves ovate, 2-6 cm. long, prominently or sometimes indistinctly 

 3-veined, entire, somewhat loosely hairy above when young, 

 paler beneath and glabrescent or with a few soft hairs; petioles 

 Blender, somewhat villous, 6-8 mm. long ; inflorescence 6-16 cm. 

 long and .'5-10 cm. broad; flowers blue, varying to white; fruit 

 r>-ii mm. in diameter, somewhat lobed at apex, nearly smooth 

 and with low but broad, deeply dorsal evanescent crests. 



Frequent in the pine belt of all our mountains and in the uppermost por 

 tions of the chaparral belt. 



2. C spinosus Nutt. Tall shruli or somewhal arborescent, 

 with at length cinnamon-brown, more or less divaricate, sparingly 



