384 LXXXII. PRIMULACE^. Primula 



Conspectus of the Genera. 



( 7-cIeft. Leaves in one whorl. . . Trientalix. 4 



-jB-cleft. Flowers paniculate. . . Samoliis. 10 



r Corolla white, (4-clelt. Plants 2 inches his^h. . . Centvnculvs. 9 



J ^ Stamens 6. llacemes a.\iUary. . . t>iaiimb-urgia. 6 



1 Corolla yellow. \ Stareiens 5 Lysiinachia. 7 



l Corolla scarlet. Plant pro.strale. Fls. solitjiry, axillary. Anagallis. 8 



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



(cauline, <pectinate-uinnatilid, submersed in water llottotna. 1 



\ li Corolla set'ments spreading Pnniula. 2 



Leaves ( all radical. Scape umbellate. { Corolla segments reflexed Dodecatlieon. 3 



1. HOTTONIA. 



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



Calyx 5-partecl ; cor. salver-form, witli 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 h^rbs., with fec- 

 tinate-pinnaiifid., submersed^ radical Ivs. 



H. iNPi-ATA. Ell. (H. palustris. Ph. not Linn.) , Water Featlier. 



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

 pedunculate. — A curious aquatic plant, in swamps and staj2:nant 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 J' long. June. 



2. PRIMIJLA. 



Lat. priimi-i, first ; because its blossoms appear earliest in spring. 



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

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

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

 scape., shoivy. 



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



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

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

 much shorter than the tube of the corolla; cnr. salver-fonn, lobes obcordate.— 

 Shores of Seneca Lake, N. Y., Dr. SarticclU 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. BircVs-eije Primrose. 



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

 ate at base, mider surface covered with 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 obcordate, bifid 

 obtuse. — Shores of Lakes Huron and Superior, Nutt., Houghton, N. to lat. 66°. 

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



3. P. AURiciJLA. Avricled Primrose or Auricula. — Lvs. obovate, entire or ser- 

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

 leaves ; cal. powdery.— Tj, 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. ■\ « 



4. P. ELATioR. Jacq. OxUp Primrose. — Lvs. toothed, rugose, hairy on each 

 side; umbel many-flowered, with the outer flowers nodding ; cor. flat. — ?]. 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.) Cou-sVip Primrose. — Lvs. toothed, 

 rugose, haiiy beneath ; umbels many-flowered, flowers all nodding ; cal. angulatf- 

 cor, concave. — % Native of Britain. Flowers yellow. The plant smells strong! f 



