140 SALICAKI.E. 



toothed: achene 2 lines long or more, elliptical, somewhat compressed, 

 short-stipitate, with a short spine or tubercle on each side near the 

 base, not margined; style equalling the achene. — At San Francisco, 

 according to Chamisso. 



Obdbr xliv. S A L I C A R I >£ . 



Herbs with entire leaves, and axillary or spicate mostly 5-merous 

 purplish flowers. Calyx tubular, enclosing the ovary but free from it; 

 the petals and definite stamens borne on the throat of it. Style 1. 

 Capsule mostly 1-celled by the vanishing of the thin partitions. Seeds 

 numerous, small, on a central placenta, exalbuminous. 



1. LYTHRUM, Linn. Calyx cylindrical, 10 — 12-angled or -striate, 

 10 — 12-toothed; the teeth alternately long and erect and shorter and 

 incurved. Petals 5 or 6, inserted on the throat of the calyx-tube alter- 

 nately with the erect teeth. Stamens from the middle or the base of 

 the calyx-tube, as many or twice as many as the petals. Style filiform; 

 stigma capitate. 



* Petals minute, pale. 



1. L. Hvssopifolia, L. Annual, simple or branching, erect, 4 — 10 in. 

 high: herbage pale, glabrous: lowest leaves opposite: fl. subsessile in 

 the "axils of the alternate leaves, very small, whitish or pale-purple. — Not 

 rare in the Coast Range, from Humboldt Co. southward throughout the 

 State; also, in a large form, in the interior, near Stockton, etc. 



2. L. iidsurgeus, Greene. Sloloniferous perennial, the 5-angled 

 branches 1 — 3 ft. long, decumbent or assurgent; herbage pallid, glabrous, 

 slightly succulent: calyx 2% lines long, 12-striate, the striae at length 

 widening below: petals pale purple. — Plant very near the preceding in 

 all points except its great size and perennial stoloniferous habit. 

 Common in wet places near the Bay, at West Berkeley, etc. 



* * Petals larger, bright red-purple. 



3. L. Californicum, Torr. & Gray. Stoloniferous perennial, the 

 roots spreading near the surface of the ground: stem erect, 2 — 3 ft. high, 

 simple below, paniculately branching above: lower leaves lanceolate; 

 upper and floral linear: striae of the calyx not wing-margined; teeth 

 very short. — In marshy land; also along streams, and in springy places. 



2. AMMAUNIA, Houston. Glabrous opposite-leaved annuals; the 

 flowers 2 or more in each axil. Calyx subglobose, more or less distinctly 

 4-angled, 4-toothed, usually with horn-shaped appendages alternating 

 with the teeth. Petals 4, purplish, small and deciduous, sometimes 

 wanting. Stamens 4 — 8. Capsule globular. 



1. A. coccinea, Kottb. Erect, stoutish, %—1 ft. high, with few 

 spreading branches: stem 4-angled: leaves linear-lanceolate, 1 — 3 in. 



