polemoniacejE. (polemonium family.) 373 



southward. May, June. — Flowers showy : tuhe of the corolla an inch long; 

 the limb nearly as broad. 



8. P. divaric^ta, L. Stems spreading or ascending from a decumbent 

 base (9'-18'high); /earss oft/on^-ouate or the lower oblong-lanceolate (Ij'long), 

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

 der; calyx-teeth slender awl-shaped, much longer than the tube; lobes <rf the pale 

 lilac err bluish corolla obcordate or wedge-obovate and notched at the end, or often entire 

 (var. Laphamii, Wood), ^'- 1' long, equalling or longer than the tube, with rather 

 wide sinuses between them. — Rocky 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 d'-l^' long, 1^" wide) ; flowers few, on slender pe- 

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

 purple corolla 2-cteJl 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 tufted in broad mats, the short powering shoots ascending, 

 glandular-pubescent ; the rigid narrow leaves crowded and fascicled. 



10. P. subulkta, L. (Gkound 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. set&cea, L.) — Dry rocky hiUs and sandy banks, S. New York to 

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



3. DIAPENSIA, L. Diapensia. 



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

 rounded. 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 transverse-descending 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-bractcd under the calyx. Corolla white (J' wide). (Ancient Greek name of 

 the Sanicle, of obscure meaning, strangely applied by Linnseus to this plant.) 



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

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



4. PYXIDANTHERA, Michx. Pyxidanthera. 



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

 OtheiTvise much as in Diapensia. — A small prostrate and creeping evergreen, 

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

 alternate on the sterile branches, and somewhat hairy near the base. Flowers 

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

 a small box, and avBrjpa, anther, the anther opening as if by a lid.) 



1. P. barbul&ta, Michx. — Sandy pine barrens of New Jersey and south- 

 ward. April, May. 



