326 ERICACEAE. (HEATH FAMILY.) 



2. HYPOPITYS. Plant commonly fragrant; flowers several in a seal if 

 raceme; the terminal one usually 5-merous, the rest 3-4-merous; bract-like 

 sepals mostly as mam/ as the jittals; anthers ojiai/ix/ bi/ a continuous line 

 into 2 very unequal valves ; style lonyer than the oi'ary, hollow. 



2. M. Hypopitys, L. (PINK-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. ( E u. ) 



OKDER 59. DIAPENSlACE^J. 



Low perennial herbs or suffruticulose tufted plants, glabrous or nearly 

 so, loith simple leaves, no stipules, regular 5-merous flowers (except the 3- 

 celled ovary), stamens adnate to the corolla and sometimes monadel phous 

 (those opposite its lobes when 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^E. Dwarf woody evergreens, with small entire crowded cori- 

 aceous leaves. Staminodia none; filaments adnate to the campanulnte 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. GAL.ACINE.a3. 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 Diapensia. 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 irvis, a small box, and 

 avQ-hpa, 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, growing in very dense 

 convex tufts, with the stems imbricated below with cartilaginous narrowly 

 spatulate mostly opposite leaves, terminated by a scape-like 1-flowered pe- 

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



