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late; fruit a 2-seeded samara. Leaves oppo- 
site, imparipinnate, deciduous.— b. ; 
1. N. Catrrornicum Torr. & Gray.—San 
Mateo. Marin County. Spring. 
Orper 6. CELASTRALES. Parts of the 
flower correspondent in number. Disc tumid, 
adnate to the base of the calyx. Stamens in- 
serted with the petals on the margin of the 
disc. Ovules definite. 
Family 1. RHAMNACEZ. 
Calyx conspicuous, gamosepalous, valvate in 
wstivation. Stamens inserted with the petals 
and alternate with the calyx lobes. Ovary 2- 
3-celled ; cells l-ovulate. Styles 2-3, more 
or less connate. 
1, Rhamnus Juss. 
Calyx-tube urceolate, margin 4-5-cleft. Pet- 
als minute, with short claws, or 0. Ovary free. 
Fruit a 2-3-pyrenous drupe. Leaves alternate, 
stipulate.— h. 
1. R. crocea Nutt. Flowers 4-merous, ape- 
talous; fruit red.—Lake Chabot. San Rafael. 
Taylorville. Spring. 
2. KR. Catrrornica Esch. Flowers 5-merous; 
petals small, ovate, emarginate ; ripe fruit 
black.—Common. Summer. 
“Oascarasagrada” of the old Californians. An 
infusion of the bark of this species and of R. 
