384 LXXXII. PRIMULACEuE. Primula. 



Conspectus of the Genera. 



( 7-cleft. Leaves in one whorl. . . Trientalis. 4 



< 5-clett. Flowers paniculate. . . Samolvs. 10 



'Corolla white, (4-clelt. Plants 2 inches high. . . Centuncuhis.B 



\ Stamens 6. Racemes axillary. . . Naumburgia. 6 



Corolla yellow. ( Stamens 5 Lysimachza. 7 



.Corolla scarlet. Plant prostrate. Fls. solitary, axillary. Anagallis. 8 



J undivided. Corolla wanting, calyx colored, white Glaux. 5 



C cauline, I pectinate-pinnatifid, submersed in water Hottonia. 1 



< ^ Corolla segments spreading Primula. 2 



Leaves ( all radical. Scape imibeliate. \ Corolla segments reflexed Dodecatheon. 3 



1. HOTTONIA. 



In honor of Peter Hotton, professor in the University of Leyden, died 1709. 



Calyx 5-parted ; cor. salver-form, with a short tube and a flat, 5- 

 lobedlimb; sta. inserted on the tube of the corolla, included ; stig. 

 globose ; caps, globose-acuminate. — % Fleshy^ aquatic herbs^ icith pec- 

 tinate-pi?inatijid, submersed., radical Ivs. 



H. INPLATA. Ell. (H, palustri-s. Ph. not Linn.') Water Feather. 



Scape articulate, the internodes and lower parts inflated; fls. verticillate, 

 pedunculate. — A curious aquatic plant, in swamps and stagnant waters, Ms., 

 R. I. and Ct., N. Y. to Flor. Stem immersed, round, thick, spongy, with a 

 whorl of long and beautifully pectinate leaves at or near the surface of the water. 

 Peduncles or scapes several (6 — 10) together, arising in a sort of umbel from 

 the top of the stem, 8—10' long, inflated between the joints, forming the most 

 remarkable feature of the plant. Flowers small, white, in numerous verticils, 

 generally 4 in each. Pedicels h' long. June. 



2. PRIMULA. 

 Lat. primus, first ; because its blossoms appear earliest in spring. 



Corolla salver-form, with an open orifice ; capsule opening with a 

 10-cleft dehiscence; stamens 5, not exserted; stigma globose. — Herbs 

 (mostly JSuropea7i) with radical Ivs. Fls. in an involucrate umbel on a 

 scape.) showy. 



1. P. MisTASSiNicA. Michx. (Fig. 49.) 



Lvs. spatulate, dentate or crenate, obtuse or acute, attenuate atba.se; invol. 

 l_8-flowered; bracts 3 times shorter than the pedicels, linear-subulate; cat. 

 much shorter than the tube of the corolla; cor. salver-form, lobes obcordate. — 

 Shores of Seneca Lake, N. Y., Dr. SartioelU Cliffs,Willoughby lake,Vt.! through- 

 out Brit. Am. A very delicate plant, about 3' high. Leaves about 5, 5 — 8" by 

 3 — 4", almost petiolate. Flowers 5" diam., white. Pedicels 7" in length. 



2. P. FARiNosA. /?. Americana. Torr. Bird's-ei/e Primrose. 



Lvs. narrow, veiny, elliptic-lanceolate, obtuse, denticulate at apex, attenu- 

 ate at base, under surface covered with a yellowish- white, farinaceous dust ; 

 invol. farinaceous, 3 — 20-flowered, shorter than the pedicels; t?racts long-aciuni- 

 nate; cat. scgvicnts lanceolate, acute; cor. salver-form, lobes obcordate, bifid, 

 obtuse. — Shores of Lakes Huron and Superior, Nutt., Houghton, N. to lat. 60°. 

 Scape 6 — 12' high. Flowers purple or flesh-color. 



3. P. AURICULA. Auriclcd Primrose or Auricula. — Lvs. obovate, entire or ser- 

 rate, fleshy; scape many-flowered, central, as long as the leaves; invol. of short 

 leaves; cal. powdery. — %. Native of the Alps. A well known favorite of the 

 florist. The cultivated varieties are innumerable, and many of them of exqui- 

 site beauty and fragrance. May. f 



4. P. ELATiOR. Jacq. Oxlip Primrose. — Lvs. toothed, rugose, hairy on each 

 side ; uynbcl many-flowered, with the outer flowers nodding ; cor. flat. — 7]. Native 

 of Britain. Flowers yellow, scentless, in a simple umbel elevated upon a scape 

 a foot high. Apr. May. f 



5. P. OFFICINALIS. Jacq. (P. veris. Cam.') Cowslip Primrose. — Lvs. toothed, 

 rugose, hairy beneath; ww^ic/s many-flowered, flowers all nodding; ca/. angular; 

 cor. concave.— 9; Native of Britain. Flowers yellow. The plant smells .strongly 



