PRIMULACE^E. (PRIMROSE FAMILY.) 271 



a DODECATHEON. Corolla reflexed, 5-parted. Stamens exserted ; filaments tin ted. 



* * Steins leafy : corolla wheel-shaped (or in Glaux none). 

 4 TRIENTALIS. Corolla mostly 7-parted. Stem leafy at the summit. 



5. LYS1MAC1IIA. Corolla 5-parted, without intermediate teeth. Stems leafy. 



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



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



TEIBE II. AIVAGAI^LiIDE^E. Tod free from the calyx, opening all round )y a tran 

 Terse line, the top falling off like a lid. 



8 ANAGALLIS. Corolla longer than the calyx. 5 parted Leaves opposite. 



9. CENTUNCULUS. Corolla shorter than the calyx, 4 -5-cleft. Leaves alternate. 



TRIBE III. SAMOL.EJE. Pod partly adherent to the calyx, opening by valves. 



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



TRIBE IV. HOTTO1VIEJE. Pod entirely free from the calyx, opening by valves. 

 Seeds fixed by the base, anatropous. 



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



1. PRIMULA, L. PRIMROSE. COWSLIP. 



Calyx tubular, angled, 5-cleft. Corolla salver-shaped, enlarging above the 

 insertion of the stamens ; the 5 lobes often notched cr 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 iu an umbel. (Name a diminutive of primus, 

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



1. P. fariiiosa, L. (BIRD'S-EYE PRIMROSE. ) Leaves elliptical or 

 obovate-lanceolate, the lower surface and the 3-20-flowercd involucre, frc. covered 

 with a ivhite 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. ITIiStclSSiiiica, Michx. Leaves spatulate or wedge-oblong, thin 

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

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

 Lake (Sartivell) and Annsvillc, Oneida County, New York (Knieskern and 

 \ r asey), Willoughby Mountain, Vermont ( Wood, frc.), and northward. May. 

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



P. VERIS and P. VULG\RIS are the COWSLIP and PRIMROSE of Europe, 

 from which various cultivated varieties arc derived. 



2. ANDROSACE, Toum. AXDROSACE. 



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

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

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

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

 oj/5j)os, of man, and aaKOf, a shield: unmeaning.) 



1. A. CCicleiltialiS, Pursh. Smoothish; scapes diffuse (2'-4' high), 

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

 cniyx-lobes leafy, triangular-lanceolate, longer than the (white) corc.lla. 

 Hills on the Mississippi, Illinois, and northwestward, 



17 



