304 ERICACE.E. (HEATH FAMILY.) 



cent root-parasitic herb (l-2high); the wand-like stem furnished towards 

 the base with scattered lanceolate scales in place of leaves, above bearing many 

 nodding (white) flowers, resembling those of Andromeda, in a long bracted ra- 

 ceme. (Name from wrepov, a wing, and <rrropd, seed, alluding to the singular 

 wing borne by the seeds.) 



1 . P. Andromed^a, Nutt. Hard clay soil, parasitic apparently on the 

 roots of pines, from Vermont, Peekskill and Albany, N. Y., and N. Pennsylvania 

 northward and westward : rare. 



27. SCHWEINITZIA, Ell. SWEET PINE-SAP. 



Calyx of 5 oblong-lanceolate acute scale-like sepals, erect, persistent. Corolla 

 persistent, bell-shaped, rather fleshy, 5-lobed, slightly 5-gibbous at the base. 

 Stamens 10 : anthers much shorter than the filaments, fixed near the summit, 

 awnless ; the two sac-shaped cells opening at the top. Pod ovoid. 5-celled, with 

 a short and thick style, and a large 5-angular stigma. Seeds innumerable. 

 A low and smooth brownish plant, 3' -4' high, with the aspect of Monotropa, 

 scaly-bracted, the flowers several in a terminal spike, at first nodding, flesh-color, 

 exhaling the fragrance of violets. (Named for the late L. D. von Schweinitz.) 



1. S. odorata, Ell. Woods, parasitic on the roots of herbs, Maryland 

 and southward : rare. April. 



28. MON6TROPA, L. INDIAN PIPE. PINE-SAP. 



Calyx of 2 - 5 lanceolate bract-like scales, deciduous. Corolla of 4 or 5 sep- 

 arate erect spatulate or wedge-shaped scale-like petals, which are gibbous or 

 saccate at the base, and tardily deciduous. Stamens 8 or 10 : filaments awl- 

 shaped : anthers kidney-shaped, becoming 1 -celled, opening across the top. 

 Style columnar : stigma disk-like, 4 - 5-rayed. Pod ovoid, 8 - 10-grooved, 4-5- 

 celled, loculicidal: the very thick placenta* covered with innumerable minute 

 seeds, which have a very loose coat. Low and fleshy herbs, tawny, reddish, or 

 white, parasitic on roots, or growing on decomposing vegetable matter like a 

 Fungus ; the clustered stems springing from a ball of matted fibrous rootlets, 

 furnished with scales or bracts in place of leaves, 1 - several-flowered ; the flow- 

 ering summit at first nodding, in fruit erect. (Name composed of povos, one, 

 and rpoTros, turn, from the summit of the stem turned to one side.) 



1. MONOTROPA, Nutt. Plant inodorous, with a single 5-petalled and 10-an- 

 drous flower at the summit ; the calyx of 2 4 irregular scales or bracts: anthers 

 transverse, opening by 2 chinks : style short and thick : stigma naked. 

 1. M. Unifl6ra, L. (INDIAN PIPE. CORPSE-PLANT.) Smooth, waxy- 

 white (turning blackish in drying, 3' -8' high); stigma naked. Dark and 

 rich woods : common. June - Aug. 



2. HYP6PITYS, Dill. Plant commonly fragrant : flowers several in a scaly 

 raceme; the terminal one usually 5-petalled and 10-androus, while the rest are 4- 

 petolled and S-androus ; the bract-like sepals mostly as many as the petals : anthers 

 opening by a continuous line into 2 very unequal valves, the smaller one erect and 

 appearing like a continuation of the fllament : style longer than the ovary, hollow. 



