PRIMULACE^S. 289 



the corolla emarginate. reclinate ; lower small, entire ; palate very large ; 

 spur linear-subulate, somewhat acute, as long as the corolla. 



Bogs. N. Eng. to Flor. Le Conte. (T). Scape 1218 inches high, 410- 

 flowered, furnished with scales. Flowers yellow, rather large. Spur more 

 slender and acute, than in U. cornuta. Personate Bladderwort. 



11. U. purpurea Wall.: floating; leaves verticillately branched; the 

 capillary segments furnished with air bladders ; scape 1 3-flowered ; upper 

 lip of the corolla truncate ; the lower 3-lobed ; lateral lobes cucullate ; spur 

 conical, appressed to the corolla and half its length. U. saccala, Ell. 



Ponds. Mass, to Flor. N. W. Territory. Houghton. Aug. (. Stems 

 2 3 feet long. Scapes 2 4 inches long, axillary, solitary and in pairs. Co- 

 rolla purple. Purple Bladderwort. 



ORDER XCVII. PRIMULACE^E. PRIMWORTS. 



Calyx 4 5-cleft, persistent. Corolla regular, the limb 4 5- 

 cleft. Stamens inserted upon the corolla, equal in number, 

 and opposite to its segments. Ovary 1 -celled ; style 1 ; stigma 

 capitate. Capsule with a central placenta. Seeds numerous, 

 peltate ; embryo lying across the hilum in fleshy albumen. 

 Herbaceous plants, with the leaves usually radical ; otherwise 

 whorled and opposite or alternate. 



1. PRIMULA. Linn. Primrose. 



(From the Latin primus, first ; on account of the early appearance of the flow- 

 ers of some species.) 



Calyx tubular, 5-toothejd. Corolla salver-form ; tube cylin- 

 dric ; orifice open. Stamens 5, not exserted. Stigma globose. 

 Capsule opening with 10 teeth. Flowers in an involucrate 

 umbel. 



P. Mislassinica Mich. : leaves obovate-spatulate, sparingly toothed, ob- 

 tuse or acute, smooth or pubescent beneath ; scape slender, with a few- 

 flowered umbel ; segments of the corolla obcordate, slightly emarginate, 

 about two-thirds as long as the tube. D. pusilia Hook. 



Yates county, N. Y. Dr. Sartwell. Steuben county, N. Y. D. Thomas. 

 N. to Arct. Amer. 1J-. Plant usually smooth, but sometimes powdery. Scape 

 3 5 inches high. Leaves 6 10 lines long. Flowers about 3, in a terminal 

 umbel, pale-purple. Mr. David Thomas informs me that this plant was found 

 several years since near Hammondsport, Steuben county, N. Y. The two New 

 York localities are the only known ones in the U. S. 



Dwarf Canadian Primrose. 



2. DODECANTHEON. Linn. American Cowslip. 



(From the Greek CO^KO, twelve, and drjof, divinity ; an old name renewed by 

 Linnaeus on account of its beauty.) 



Calyx 5-parted, reflexed. Corolla rotate, 5-parted, the lobes 

 reflexed. Stamens 5, inserted into the throat of the corolla ; 



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