POLEMONIACE^. (POLEMONIUM FAMILY.) 373 



southward. May, Juno. — Flowers showy : tube of tlie corolhi an inch long ; 

 the limb nearly as broad. 



8. P. diVaricata, L. Stems spreading or ascending from a decumbent 

 base (9'- 18' Iiigli) ; leaves ohlung-ocate or the lower oblong-lanceolate (I^' long), 

 acutish ; cyme corymbose-paniclcd, spreading, loosely-flowered; peduncles slen- 

 der; calyx-teeth slender awl-shaped, m-ich longer than the tube; lobex of the pale 

 lilac or htuinh corolla obcordate or wed<je-ohovate and notched at the end, or often entire. 

 ( var. Laphamii, Wood), j' - §' long, equalling or longer than the tube, with rather 

 wide sinuses between them. — llocky damp woods, mountains of Virginia to N. 

 New York, Wisconsin, and northward. May. 



9. P. bifida. Beck. Stems ascending, branched (5' -8' high) ; leaves linear, 

 becoming nearly glabrous (^'-li' long, Ij" wide) ; flowei's few, on slender pe- 

 duncles; calyx-teeth awl-shaped, about the length of the tube; lobes of the pale 

 purple corolla 2-cleft to or below the middle (4" long), equalling the tube, the divis- 

 ions linear oblong. — Prairies of Illinois, Mead (and Missouri). May. 



* * * * Stems creeping and ttfled in broad mats, the short flowering shoots ascendin(/, 

 glandalar-pahescent ; the rigid narrow leaves crowded and fascicled. 



10. P. subulata, L. (Ground or Moss Pink.) Depressed, in broad 

 mats; leaves awl-shaped, lanceolate, or narrowly linear (.3" -6" long) ; cymes 

 few-flowered; calyx-teeth awl-shaped, rigid; corolla pink-purple or rose-color 

 with a darker centre (sometimes white) ; the lobes wedge-shaped, notched, rarely 

 entire. (P. setacea, L.) — Dry rocky hills and sandy banks, S. New York to 

 Michigan and southward. April, May. — Common in cultivation. 



3. DIAPENSIA, L. Diapexsia. 



Calyx of 5 concave imbricated sepals. Corolla bell-shaped, 5-lobed ; the lobes 

 roimded. Filaments broad and flat, adherent to the corolla up to the sinuses, 

 short : anthers adnate, of 2 ovoid pointless cells, diverging below, each opening 

 therefore by a ti-ansverse-deseending line. Pod enclosed in the calyx, cartilagi- 

 nous ; the cells few-seeded. — An alpine dwarf evergreen, growing in very dense 

 convex tufts, with the stems imbricated below with cartilaginous narrowly spat- 

 ulate mostly opposite leaves, terminated by a scape-like 1 -flowered peduncle, 

 3-bracted under the calyx. Corolla white (^' wide). (Ancient Greek name of 

 the Saniclc, of obscure meaning, strangely applied by Linna?us to this plant.) 



1. D. Lapponica, L. — Alpine summits of the White Mountains, New 

 Hampshire, and Adirondack Mountains, N. New York. July. (Eu.) 



4. PYXIDANTHERA, Michx. Pvxidanthera. . 



Anther-cells awn-pointed at the base, opening by a strictly transverse line. 

 Otherwise much as in Diapensia. — A small prostrate and cree])ing evergreen, 

 ■with narrowly oblanceolatc and awl-pointed crowded leaves, which are mostly 

 alternate on the sterile branches, and somewhat hairy near the base. Fk)wcrs 

 solitary and sessile, very numerous, white or rose-color. (Name from wv^ls, 

 a small box, and a:>6r)pa, anther, the anther opening as if by a lid.) 



1. P. barbulata, Michx. — Sandy pine barrens of New Jersey and south- 

 Vvard. April, May. 



