226 PYROLACE/E. 



2. MONOTROPA. Linn. Bird's Nest. 



(From the Greek //oj>os, one, and rfjsn-w, to turn ; from its flowers turning 

 chiefly to one side.) 



Calyx none. Corolla 4 5-petalled, persistent, cucullate at 

 base. Stamens 8 10. Filaments alternating at the base, with 

 short reflexed tooth-like processes. Anthers 1 -celled, at length 

 opening flat. Stigma orbicular, umbillicate or depressed. Cap- 

 sule 4 5-celled. Seeds subulate. 



* Stem many-flowered. HYPOPITHYS Null. 



1. M. lanuginosa Mich. : stem, bracts, and flowers pubescent; flowers m 

 a terminal raceme ; capsule globose. Hypopilhys lanuginosa Null. 



var. glabriuscula Torr. : stem and scales nearly or quite smooth ; flowers 

 somewhat pubescent. M. Hypopilhys Mich. Hypopithys Europtza Null. 



Roots of trees. Can. to Car. July, Aug. ^. Stems clustered, erect, 4 8 

 inches high, simple. Leaves merely scales, lanceolate-ovate, crowded near the 

 root, scattered above. Flowers in a terminal raceme, which is at first nodding 

 but finally erect. Whole plant of a yellowish-brown color (rarely reddish), 

 turning black by decay or drying. Pine-sap. False Beachdrops. 



** Stem \-flowered. MONOTROPA. Null. 



2. M. uniflora Linn. : stem smooth, 1-flowered; flower with 10 stamens 

 erect or cernuous. M. Morisoniana Mich. 



Shady woods. Can. to Flor. June. 1}.. Scape 5 8 inches high. Flowers 

 large, at first nodding but afterwards erect. Whole plant white and smooth, 

 becoming purplish-black in drying. Indian Pipe. 



3. PTEROSPORA. Null Tall Bird's Nest. 

 (From the Greek rrepoi/, a wing, and wopa, a seed.) 



Calyx 5 -parted. Corolla monopetalous, ovate ; margin 5- 

 toothed, reflexed. Stamens 10, included. Filaments subulate. 

 Anthers with 2 bristles on the back near the base, 2-celled. 

 Style short, terete. Stigma obtusely 5-lobed. Capsule de- 

 pressed-globose, 5-celled. Seeds' numerous, minute, furnished 

 with a large terminal reticulated wing. 



jP. Andromeda Null. 



Clayey and limestone soils. Can. Ver. and N. Y. W. to the Columbia river ; 

 not common. July. 7J.. Plant covered with brownish viscid hairs. Stem 

 1 2 (sometimes more than 3) feet high, straight, simple, grooved, brownish-red 

 or purplish, clothed at the base with imbricate lanceolate scales. Flowers very 

 numerous, in a long terminal raceme, rose-red and white. Pedicels filiform, 

 nodding, longer than the flowers. Tall Bird's Nest. 



SUBCLASS III. COROLLIFLORALS. 

 Petals united into a hypogynous corolla, or not attached to 

 the calyx. Stamens inserted into the corolla. 



