226 PYROLACEiE. 



2. MONOTROPA. Linn.— Bird's Nest. 



(From the Greek //oj/oj, one, and Tpenw, to turn; from its flowers turning 

 chiefly to one side.) 



Calyx none. Corolla 4 — 5-pet^lled, 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. 



^ * Skm many-jlowered. Hypopithys Niiit. 



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

 a terminal raceme ; capsule globose. Hypopithys lanuginosa Nutt. 



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

 somewhat pubescent. M. Hypopithys Mich. Hypopithys Europcea Nutt. 



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 l-fioicered. Monotropa. Niitt. 



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

 erect or cernuous. M. Morisoniana Mich. 



Shady woods. Can. to Flor. June. %. — Scape 5 — 8 inches high. Flowers 

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

 becoming purplish-black in drying. Indian Bipe. 



3. PTEROSPORA. Nutt— TeAl Bird's Nest. 

 (From the Greek Trrepov, a wing, and iiropa, 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. 



P. Andromeda Nutt. 



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

 not common. July. %. — 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. 



