primclacejE. (primrose family.) 271 



8. DODECATHEON. Corolla reSexed, B-parted Sttuuena exserted ; filaments united. 



* * Stems leafy : corolla wheel-shaped (or in Glauz none). 

 1 TRIENTALIS. Ooiolla mostly 7-parted. Stem leaiy at the summit. 



5. LVSIMAOHIA. Corolla 5-parted, without intermediate teeth. Stems leafy. 



6. NAUMBUROIA. Corolla of 6 or 6 petals, with intermediate teeth. 



7. GLAUX. Corolla none : the calyx petal-like. 



Teibe U. ANXGAILTjIHEJE, Pod f^ee from the calyx, opening all round by a trana- 

 Terse line, tile top falling off like a lid. 



8. ANAGALLIS. Corolla longer than the calyx, 5-parted. Leaves oppodte. 



9. CENTCNCULUS. Corolla shorter than the calyx, I - 6-cleft. Leaves alternate. 



lalBE m. SAIHOIiX:.S:. Pod partly adherent to the calyx, opening by valvei. 

 10. SAMOLUS. Corolla bell-shaped and with 5 sterile filaments in the sinuses. 



TaiBl IT. HOTTONIE.^. Pod enthrely free from the calyx, opening by valvw. 

 Seeds fixed by the base, anatropous. 



U. HOTTONIA. Corolla salver-shaped. Immersed leaves pectinately dissected. 



1. PRimiJLiA, L. Frihbose. Cowslip. 



Calyx tubular, aagled, 5-cleft. Corolla salvor-shaped, enlarging above the 

 insertion of the stamens ; the 5 lobes often notched or inversely heart-shaped. 

 Stamens 5, included. Pod many-seeded, splitting at the top into 5 valves or 10 

 teeth. — Low perennial herbs, producing a tuft of veiny leaves at the root, and 

 simple scapes, bearing the flowers in an umbel. (Name a diminutive of primus, 

 from the flowering of the true Primrose in early spring.) 



1. P. farinosa, L. (Bird's-ete Feimbose.) Leaves elliptical or 

 obovate-lanceolate, the hwer aurface and the 3 -20-flowered involucre, Sfc. covered 

 with a whiie mealiness : corolla pale lilac with a yellow eye. — Shores of Lakes 

 St Clair, Huron, and northward. June, July. — Scape 3' - 10' high. (Eu.) 



2. P. mistassinica, Michx. Leaves spatulate or wedge-oblong, thin 

 and veiny, not mealy ; involucre 1 - 8-flowered ; lobes of the flesh-colored corolla 

 broadly and deeply obcordate. — Shores of the Upper Lakes: also Crooked 

 Lake {Sartuiell) and Annsville, Oneida County, New York (Knieskent and 

 Vasth/), Willoughby Mountain, Vermont { Wood, ^c), and northward. May. — 

 A pretty species, 2' - 6' high. (En.) 



P. vfenis and P. tbloAris are the Cowslip and Primrose of Europe, 

 from which various cultivated varieties are derived. 



2. ANDROSACE, Toum. Androsace. 



Calyx 5-cleft ; the tube short. Corolla salver-shaped or funnel-form, the tube 

 shorter than the calyx, contracted at the throat ; the limb 5-partcd. Stamens 

 and style included. Pod 5-valved. — Small herbs, with clustered root-leaves 

 and very small solitary or umbelled flowers. (An old name, composed of 

 dvSpos, of man, and aaKos, a shield: unmeaning.) 



1. A. OCCidentaliS, Pursh. Smoothish; scapes difllise (2'-4' high), 

 many-flowered ; leaves and leaflets of the involucre oblong-ovate, entire, sessile ; 

 calyx-lobes leafy, triangular-lanceolate, longer than the (white) corolla. ® — 

 Banks of the Mississippi, niinois, and northwestward. 



