230 CAMPANULACEJ3. 



1. C. prenauthoides, Durand. Perennial, 12 ft. high, erect, gla- 

 brous or scabro-puberulent: leaves ovate to oblong, 1 in. long or less, 

 sharply serrate, the cauline mostly sessile: fl. mostly racemose, short- 

 pedicelled: corolla slender-cylindric in bud, % in. long, almost 5-parted, 

 the narrowly lanceolate lobes thrice the length of the tube. Wooded 

 hills of the Coast Range. 



2. C. Scouleri, Hook. Perennial, but delicate, decumbent, few- 

 leaved, the stems seldom a foot long; leaves mostly tapering into a 

 marginal petiole: fl. somewhat panicled, nodding, on long filiform pedicels: 

 corolla oblong in bud, exceeding the slender calyx-lobes, deeply 5-cleft; 

 lobes ovate-oblong. Bed woods of Marin Co., in moist shades. 



3. C. exigua, Rattan. Annual, 25 in. high: leaves only 13 lines 

 long, sessile, the lowest obovate, entire or with few teeth, the upper 

 subulate: fl. erect at the ends of the numerous divergent branchlets: calyx- 

 lobes subulate-linear, twice the length of the turbinate tube: corolla 

 light blue, oblong-campanulate; tube longer than the oblong acute 

 lobes: filaments dilated into a broad ciliolate base: capsule urceolate, 

 opening by 3 valves above the middle. Only at the very summits of our 

 highest mountains, Diablo, Tamalpais and Hamilton. June. 



2* TRIODA.NIS, Raf. Annuals with very broad closely sessile leaves, 

 and flowers of two kinds sessile in their axils. Only the uppermost 

 flowers complete, these with rotate 5-lobed corolla; the others apetalous, 

 fertilized in the bud. Calyx prismatic, of the apetalous fl. 3-lobed, of 

 the complete 5-lobed. Prismatic capsule opening by 2 or 3 small lateral 

 valves. Seeds oo , ovoid, flattish, smooth. 



1. T. biflora (R. & P.). Slender, 610 in. high, often with many 

 branches from the base: leaves ovate or_ oblong, somewhat crenate- 

 toothed; the upper reduced to lanceolate bracts shorter than the flowers: 

 calyx-lobes of complete fl. lanceolate-subulate, of apetalous shorter and 

 broader: valvular openings of capsule just below the summit: seeds 

 lenticular. Sandy plains and dry hillsides; not common. April, May. 



3. HETEROCODOX, Nutt. Habit, and dimorphous flowers of the 

 last genus; but calyx with obpyramidal tube, and broad foliaceous lobes 

 which are veiny and sharply toothed. Capsule 3-angled, thin and mem- 

 branaceous, bursting on the sides irregularly. Seeds oblong, obscurely 

 triquetrous. 



1. H. rariflorum, Nutt. Very slender, 210 in. high : leaves rounded, 

 with cordate partly clasping base, and coarse sharp teeth. Mountains 

 of Napa Co. and northward. 



4. GITHOPSIS, Nutt. Low rigid branching annuals, with flowers 

 all alike complete. Calyx with clavate or linear 10-ribbed tube and 5 

 long narrow rather rigid foliaceous lobes. Corolla narrowly campan- 



