178 ROSACEAE. 



1. S. franciscana Rydb. Shrub, 1-2 m. high; the branches 

 short, rigid; bark grayish brown, more or less shreddy; leaves ovate, 

 3-6 cm. long, cuneately narrowed to a short winged petiole, pin- 

 nately lobed or toothed above the middle, green and nearly glabrous 

 above, whitish tomentose beneath; panicles erect, branching; 

 carpels hirsute. 



Occasional in the San Gabriel Mountains in the chaparral belt. 



2. S. concolor Rydb. A low shrub with spreading branches, 

 1 m. high or less; leaves sessile, cuneate-obovate, 5-12 mm. long, 

 toothed above the middle, finely and densely canescent on both 

 surfaces; inflorescence 5-8 cm. long, with a few short spreading 

 branches. 



A high alpine species found on the summit of Mt. San Antonio 

 and also on San Gorgonio. 



2. RUBUS L. 



Low shrubs or trailing vines, usually prickly, with 

 alternate leaves, the stipules adnate to the petioles. 

 Flowers terminal or axillary, solitary, racemose or pani- 

 cled, white or purplish, mostly perfect. Calyx persist- 

 ent, bractless, deeply 5-parted. Petals 5. Stamens 

 many, inserted on the calyx, distinct. Carpels many, 

 inserted on a convex or elongated receptacle, ripening 

 into drupelets and forming an aggregate fruit. Ovules 2, 

 1 abortive; style terminal, slender. Seed pendulous. 



Leaves simple, palmately lobed; stems unarmed. 1. R. parviflorus. 

 Leaves 3-5-foliate; stems prickly. 



Drupelets separating from the receptacle in 



fruit. 2. R. IcMcodermis. 



Drupelets persistent on the receptacle. 3. R. vitifolius. 



1. R. parviflorus Nutt. (Thimble Berry.) Stems erect, 1-2.5 

 m. high, without prickles; bark smooth or somewhat glandular- 

 pubescent, becoming brown and shreddy; leaves palmately 5-lobed, 

 cordate at base, unequally serrate, 10-15 cm. broad, glabrous, or 

 somewhat tomentose on the veins beneath; petioles and peduncles 

 hirsute-glandular; flowers few, corymbose, white, 2-4 cm. broad; 

 calyx-lobes tipped with a long slender appendage; fruit separating 

 from the receptacle when ripe, hemispheric, red. {R. nutkanus 

 Mocino.) 



In moist shady places in the San Antonio and San Bernardino 

 Mountains in the pine belt. April-June. 



2. R. leucodermis Dougl. (Raspberry.) Stems erect, 4-8 dm. 

 high, glaucous, armed with stout, straight or recurved prickles; 

 leaves 3-foliate or rarely 5-foliate; leaflets ovate to lanceolate- 

 acuminate, doubly serrate, white tomentose beneath; the veins, 

 petioles and peduncles prickly; stipules setaceous; fiowers few, 

 corymbose, 1 cm, broad; sepals lanceolate, long acuminate, exceed- 



