288 DICOTYLEDONOUS PLANTS. 



HAB. Bogs. N. Eng. to Flor. Le Conte. . Scape 1218 

 inches high, 4 10-flowered, furnished with scales. Flower* 

 yellow, rather large. Spur more slender and acute than in U. 

 cornuta. Resembles an Antirrhinum. 



9. U. purpurea Walt. : scapes axillary, generally 1-flowered ; involu- 

 cre none ; lower lip of the corol 3-lobed ; lateral lobes cucullate on 

 the underside ; spur compressed, half as long as the corol. U. sac- 

 cate, Ell. 



HAB. Ponds on mountains. Mass, to Flor. N. W. Territory. 

 Hougkton. Scapes solitary and in pairs, 23 inches long. 

 Flowers purple. 



ORDER XCIV. PRIMULACEjE. Juss. Lind. 



Calyx 5- rarely 4-cleft, inferior, regular, persistent. Corol 

 monopetalous, hypogynous, regular ; the limb 5- rarely 4- 

 cleft. Stamens inserted upon the corol, equal in number, and 

 opposite to its segments. Ovary 1-celled ; style 1 ; stigmas 

 capitate. Capsule opening with valves ; placenta; central, 

 distinct. Seeds numerous, peltate ; embryo straight, cylindri- 

 cal, included within fleshy albumen, and lying across the 

 hilurn. 



Herbs, with the leaves usually opposite and either whorled 

 or scattered. 



1. PRIMULA. Linn. 



Calyx tubular, 5-toothed. Corol salver-form ; tube cylin- 

 drical ; orifice naked. Stamens -5, not exserted. Stigma 

 globose. Capsule opening with 10 teeth. Flowers in an in- 

 volucrate umbel. Pcntandria. Monogynia. 



P.farinosa var. americana Torr. : leaves obovate-spatulate, repand- 

 ly crenate-dentate, pulverulent beneath; umbel many- flowered ; pe- 

 duncles spreading ; border of the corol flat, as long as the tube, with 

 obtuse obcordate segments. P. pusilta Goldie. 



HAB. Shores of Lake Huron and Superior. 2/. Scape 6 10 

 inches high. Leaves all radical. Flowers pale purple. 



Bird's-eye Primrose. 



2. DODECANTHEON. Linn. 



Calyx 5-cleft. Corol rotate, reflexed, 5-cleft. Stamens 5, 

 seated in the tube. Stigma obtuse. Capsule 1-celled, ob- 

 long, opening at the apex. Pentandria. Monogynia. 



1. D. mcadia Linn. : scape erect, simple, smooth ; leaves oblong- 

 oval, repandly toothed ; umbel many-flowered ; flowers nodding ; 

 bracts numerous, oval. 



