POLEMONIACE^ OF OHIO. 



Dorothy E. Schodde. 



POLEMONIACE^ (Phlox Family.) 



Herbs or sometimes slightly woody plants with opposite or 

 alternate, simple, lobed, or compound leaves, the blades of the 

 leaves or leaflets entire. Flowers hypogynous, tetracyclic, 

 bisporangiate, corymbose-capitate, cymose, or paniculata, acti- 

 nomorphic or only slightly zygomorphic. Calyx persistent, 

 tubular or campanulate, five parted. Corolla sympetalous, 

 convolute in the bud. Andrecium of five stamens united with 

 the corolla and alternate with its lobes; anthers versatile. 

 Gynecium mostly of three carpels; style simple, stigmas three, 

 linear. Ovulay mostly with two to numerous ovules in each 

 cavity; capsule mostly loculicidally three valved. Seeds some- 

 times enveloped in mucilage and emitting spiral tubes when 

 wetted. 



Leaves opposite, simple, entire; corolla salverform. Phlox. 



Leaves alternate, compound or pinnatifid. 2. 



Leaves pinnatifid or dissected, segments linear; corolla funnelform or salver- 

 form in ours; cultivated. Gilia. 



Leaves pinnately compound, with or without tendrils, alternate. 3. 



Leaves without tendrils, alternate; corolla tubular-campanulate to somewhat 

 rotate; low herbs. Polemonium. 



Leaves ending in tendrils which are branched; climbing herbaceous vines; 

 cultivated. Cobaca. 



Phlox L. Phlox. 



Usually perennial, erect or diffuse herbs, with opposite, 

 entire leaves, or some of the upper ones alternate. Flowers in 

 terminal cymes or cymose panicles, sometimes closely massed, 

 blue, purplish, red, or white. Calyx five cleft, the lobes acute 

 to subulate. Corolla salverform, with a five-lobed limb and 

 narrow tube. Stamens unequal, included or only slightly 

 exserted. Ovulary with 1 to 4 ovules in each cavity; style 

 usually slender. Capsule ovoid, at length distending and rup- 

 turing the calyx tube; seed usually one in each cavity, not 

 emitting spiral tubes when wetted. 



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