WESTERN MIDDLE CALIFORNIA. 



15 



Stamens and stigmas united, the column bearing hood-like 



appendages Asclepiadace*:, p. 381. 



Stamens and stigmas not united; no hoods 



Apocynackjs, p. 380. 

 Corolla from strongly bilabiate to slightly irregular. 

 Stamens 4 or 2. 



Fruit a 1 -celled capsule. 

 Stamens 2; corolla spurred; aquatic plants with finely divided 



leaves, some bearing bladders 



Utriculakiack.k, p. 419. 



Stamens 4; root-parasites without green foliage 



Orohanchace j£, p. 420. 



Fruit a 2-celled capsule; leaves alternate or opposite 



Scrophulariace^e, p. 394. 

 Fruit of 2 to 4 nutlets; leaves opposite. 



Ovary not lobed, 2 to 4-celled, splitting into as many nutlets; 



stamens 4 or 2; style 1, entire 



Verbenace^e, p. 450. 

 Ovary 4-lobed, splitting into as many nutlets; stamens 4 or 2; 

 style 1-cleft; stems square; herbage with the odor of mint. 



Labiatje, p. 452. 

 Stamens 5, some or all woolly . . . Verbascum, p. 395. 



2. Ovary inferior, i. e , adherent to the calyx-tube. 



Stamens distinct. 



Leaves alternate; flowers regular; stamens 5; ovary and capsule 



2 to 5-celled; herbs Camp ami. a< k.e, p. 476. 



Leaves opposite or whorled. 

 Stamens 1 to 3; flowers irregular; fruit 1-celled, 1-seeded; herbs. 



Valerianace.e, p. 474. 



Stamens 4 or 5, rarely 2. 



Ovary 1-celled; flowers in involucrate heads or short spikes; 



fruit an achene; herbs . . . Dipsace.e, p. 475. 

 Ovary in ours 2-celled; flowers regular; fruit berry-like or dry. 

 commonly separating into 2 one-seeded achene-like por- 

 tions; leaves simple; herbs or shrubs 



Rubiacej£, p. 467. 

 Ovary 2 to Veelled; flowers regular or irregular; leaves simple 



or compound; erect or twining shrubs 



Caprifoliace.e. p. 470. 

 Stamens united into a tube around the style. 

 Flowers not in heads; leaves alternate. 



Stamens 3; leaves palmately lobed; tendril-bearing herbs . . . 



CUCURBITACE^, p. 319. 



Stamens 5; leaves narrow; annual herbs 



Lobeliacejs, p. 479. 

 Flowers collected into a head which is furnished with a calyx- 

 like involucre, the whole to the novice seeming like a single 



flower; stamens 5, rarely 4; fruit an achene 



Composite, p. 482. 



