380 LXXVIII. ERICACE^S. PTEROSPORA. 



SUBORDER 4. M ONOTROPEJB. 

 Ovary free from the calyx. Leafless herbs, destitute of verdure. 



20. MONOTROPA. 

 Gr. JJLOVOS, one, Tf>Eiru, to turn ; term inapplicable, as the genus is now modified. 



Calyx represented by 1 3 bracts ; pet. 5, erect, persistent, gib- 

 bous at base ; sta. 10 ; fil. persistent, alternating with 10 reflexed ap- 

 pendages of the torus ; stig. orbicular, naked ; caps. 5-celled. Para- 

 sitic herbs. St. or scape l-flowered, scentless. 



M. UNIFLORA. Indian Pipe. Bird's-nest. 



St. short ; scales approximate ; /. nodding ; /;-. erect. Common in woods, 

 Can. to Car. W. to 111. A small, succulent plant, about 6' high, yellowish- 

 white in all its parts. Stem furnished with sessile, lanceolate, semi-transpa- 

 rent leaves, or bracts, and bearing a large, terminal, solitary flower. Common 

 in woods, near the base of trees, on whose roots it is said to be parasitic. Jn. 



21. HYPOPITYS. Dill. 



Gr. 7J7ra>, under, KITVS, a pine tree ; its place of growth. 



Sepals 4 5, colored ; pet. as many as sepals, a little longer and 

 of the same color, erect, deciduous, gibbous at base; sta. 8 10; fil. 

 subulate, persistent ; anth. 2-celled, small ; stig. discoid, umbilicate ; 

 caps. 4 5-celled, 4 5-valved, many-seeded. Parasitic herbs, of a 

 tawny white. Root scaly. St. simple. Fls. racemed, lateral ones tetra- 

 merous, terminal one pentamerous. 



1. H. MULTIFLORA. Scop. (H. Europsea. Don. Monotropa. Linn.') 

 Pet., sta. and sty. hirsute ; caps, oval-oblong. 



/?. Americana. DC. (H. Europaea. Nwtt.) Plant smaller, yellowish-brown. 

 In pine woods, Can., Penn.,*Car., DC. Is not this rather a variety of the fol- 

 lowing 1 It seems to be lost to recent botanists. 



2. H. LANUGINOSA. (Monotropa. Michx. and 1st edit.} Pine Sap. 

 Plant clothed with a velvet-like pubescence ; pedicels much longer than 



the flower ; caps, subglobose. Woods, N. Y. ! Can to Car. W. to Wise. ! The 

 whole plant is of a tawny white, similar to the last. The root is a tangled mass 

 of fibres. Sc"a"pe 6 10' high, with many concave scales, covered with down. 

 Flowers 7 12, in a terminal raceme, yellowish, drooping at first, becoming 

 erect. Pedicels 1 2" long, bracts and flowers 3 times as long. Only the ter- 

 minal flower is generally decandrous ; the lateral ones have 8 stamens and 4 

 petals. Woods. Aug. 



22. PTEROSPORA. 



Gr. irrepos, a wing, <rrropa, a seed ; alluding to the winged seeds. 



Calyx 5-parted; corolla roundish-ovoid, the limb 5-toothed and re- 

 flexed ; stamens 10 ; anthers peltate, 2-celled, 2-awned ; capsule 5- 

 celled, 5-valved ; seeds very numerous, minute, winged at the apex. 

 ^1- Plant leafless, brownish-red. Fls. racemed. 



P. ANDROMEDEA. Nutt. (Monotropa procera. Ea.~) Albany Beech-drops. 



In various parts of N. Y. ! and Vt., rare. First discovered by Dr. D. S. C. 

 H. Smith, near Niagara Falls, 1816. Scape 12 30' high, dark purple, clothed 

 with short, viscid wool. Raceme 612' long, with 50 or more nodding flowers. 

 Pedicels irregularly scattered, 6 8" long, axillary to long, linear bracts. Co- 

 rolla shorter than the pedicels, somewhat campanulate, open at the throat, 

 white, tipped with red at the summit. July. 



