326 ERICACEAE. (heath FAMILY.) 



,§ 2. HYP6PITYS. Plant commonly fragrant; floicers several in a scalt/ 



raceme; the terminal one usuaUij 5-merous, the rest 3-4-merous; hract-like 



sepals mostly as many as the petals ; anthers openimj by a continuous line 



into 2 very unequal valves ; style longer than the ovary, hollow. 



2. M. Hypopitys, L. (Pi\e-sap. False Beech-drops.) Somewhat 



pubescent or downy, tawny, whitish, or reddish (4-12' high); pod globular 



or oval ; stigma ciliate. — Oak and pine woods, from Canada to Fla., west to 



Oregon. June -Aug. (Eu.) 



Okder 59. DIAPENSlACE^. 



Loiv perennial herbs or suffruticulose tufted plants, glabrous or nearly 

 so, with simple leaves, no stipules, regular b-merous flowers {except the 3- 

 celled ovary), stamens adnate to the corolla and sometimes monadelphous 

 (those opposite its lobes ichen present reduced to staminodia) ; pollen sim- 

 ple; loculicidal capsule and seeds of Ericaceae. — Flowers solitary or 

 racemose. Style 1, with 3-lobed stigma. Distinguished from the Eri- 

 caceae chiefly by the insertion of the stamens upon the corolla. 



Tribe I. DIAPENSIE^. Dwarf woody evergreens, with small entire crowded cori- 

 aceous leaves, fetaniiuodia none; filaments adnate to the campanulate corolla up to 

 the sinuses ; anthers 2-celled. Calyx conspicuously bracteolate. Flowers solitary. 



1. Pyxidanthera. Flowers sessile on short leafy branchlets. Anther-cells awn-pointed 



at base, opening transversely. 



2. Diapensia. Flower (or at least fruit) on a scape-like peduncle. Anther-cells blunt, 



obliquely dehiscent. 

 Tribe II. GALiACINE.^. Acaulescent, with creeping rootstocks sending up long- 

 petioled evergreen leaves, and a 1 - several-flowered scape. Staminodia present. 



3. Galax. Calyx minutely 2-bracteolate. Stamens monadelphous : anthers 1-celled. 



1. PYXIDANTHERA, Michx. 



Sepals thin. Anther-cells awn-pointed at base, opening by a strictly trans- 

 verse line. Otherwise much as in J^iapensia. — Prostrate and creeping, with 

 narrowly oblanceolate and awl-pointed leaves, mostly alternate on the sterile 

 branches and somewhat hairy near the base. Flowers solitary and sessile, 

 very numerous, white or rose-color. (Name from w^ls, a small box, and 

 avOiipa, anther, the anther opening as if by a lid.) 



1. P. barbulata, Michx. (Flowering Moss. Pyxie.) Leaves 3" 

 long. — Sandy pine barrens of N. J. to N. C April, May. 



2. DIAPENSIA, L. 



Calyx of 5 concave imbricated coriaceous sepals. Corolla bell-shaped, 5- 

 lobed ; lobes rounded. Filaments broad and flat, adherent to the corolla up 

 to the sinuses, short ; anthers adnate, of 2 ovoid pointless cells, diverging be- 

 low, each opening therefore by a transverse-descending line. Capsule, enclosed 

 in the calyx, cartilaginous ; cells few-seeded. — Alpine, grooving in very dense 

 convex tufts, with the stems imbricated below with cartilaginous narrowly 

 spatulate mostly opposite leaves, terminated by a scape-like l-flowered pe- 

 duncle, 3-bracted under the calyx. Corolla white {^' wide). (Said to be an 



