384 LXXXir. PRIMULACEiE, Primula. 



Conspectus of the Genera. 



i 7-cleft. Leaves in one whorl. . . Triantalis. 4 



< 5-clet't. Flowers paniculate. . . Samolus. 10 



r Corolla white, ( 4 -cleft. Plants 2 mches high. . . Csntunculws.a 



\ Stamens 6. Racemes axillary. . . Nau7nburgia. 6 



Corolla yellow, t Stamens 5 Lysiinachia. 7 



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



< undivided. Corolla wanting-, calyx colored, white Glaux. 5 



( cauline, { pectinate-pinnatifid, submersed in water. Hottnnia. 1 



{ t Corolla sesjments spreading Primula. 2 



Leaves ( all radical. Scape umbellate. \ CoroUa segments reflexed Vodecatheon. 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- 

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

 globose ; caps, globose-acuminate. — %■ Fleshy., aquatic Jwrbs, with pec- 

 tinaie-pinnatifid^ submersed, radical Ivs. 



H. iNPLATA. Ell. (H. palustris. Ph. not Linn.) Water Feather. 



Scape articulate, the internode.s and lower part.s inflated; Jls. 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-eleft dehiscence ; stamens 5, not exserted ; stigma globose. — Herbs 

 {mostly European) with radical Its. Fls. hi an involucrate umbel on a 

 scape, showy. 



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



Lvs. spatulate, dentate or crenate, obtuse or acute, attenuate at base ; invol. 

 1 — 8-flowered ; bracts 3 times shorter than the pedicels, linear-subulate ; cal. 

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

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

 out Brit. Am. A very delicate plant, about 'S' 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-eije Primrose. 



LA'S. narrow, veiny, elliptic-lanceolate, obtuse, denticulate at apex, attenu- 

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

 invol. farinaceous, 3 — 20-flowered, shorter than the pedicels; bracts long-acumi- 

 nate; cal. segments lanceolate, acute; cor. salver-form, lobes obcordale, bifid, 

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

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



3. P. AURICULA. Avriclcd 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. — 1\. 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. OxUp Primrose. — Lvs. toothed, rugo.se, hairy on each 

 side ; umbel many-flowered, with the outer flowers nodding ; cor. flat. — 1\ 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, haiiy beneath ; umbels many-flowered, flowers all nodding; cal. angular ; 

 cor. concave. — '2|. Native of Britain. Flowers yellow. The plant smells strongly 



