ALLOTROPA MONOTROPACE^E 427 



PTEROSPORA 



iobed, 1-6-celled; with the placentae projecting from a central 

 columella, or parietal and 2-lamellate : ovules numerous, anatro- 

 pous. Fruit a loculicidally 4-6-valved many- seeded capsule. 

 Seeds minute, the testa reticulated. 



TRIBE i. Ovary 4 5-celled, with the placenta on a thick central 

 columella. 



1 Allotropa Calyx of 5 roundish marcescent sepals, corolla wanting. 



2 Pterospora Calyx deeply 5-parted: corolla globular-urceolate. 



3 Sarcodes Calyx of 5 erect persistent sepals : corolla cylindraceous 



campanulate. 



4 Monotropa Calyx of 2-4 deciduous sepals : petals 5-6, not saccate at 



base, tardily deciduous. 



5 Hypopitys Sepals 3-5, commonly as many as petals: petals saccate 



at base. 



TRIBE n. Ovary 1-celled or spuriously 4-5-celled ; the 4 or 5 

 placentae parietal and 2-lamellate. 



6 Pleuricospora Calyx complete, of 4 or 5 scale-like fimbriate-laciniate 



sepals : corolla of 4 or 5 plain petals : ovary strictly 1-celled. 



(> Xewberrya Calyx incomplete, of 2 bract-like entire sepals : corolla 

 tubular-urceolate 4-5-lobed, marcescent: ovary spuriously 5 celled. 



Tribe I Eumonotropeae Gray Syn. Fl. ii, 18. Ovary 5-celled, or so- 

 metimes 4-celled, the placentae projecting from a thick central columella. 



1 ALLOTROPA T. & G. Bot. Wilkes 385. 



Scapose red or whitish scaly-bracted herbs with numerous small 

 flowers in a virgate spike. Calyx of 5 rounded sepals, marces- 

 cent under the capsule. Corolla none. Stamens 10 : anthers 

 didymous on long and slender filaments, extrorse in the bud, be- 

 coming introrsely pendulous ; cells opening by a chink from the 

 apparent apex to the middle. Style short ; stigma peltate-capitate. 

 Capsule globose, very many-seeded. Seeds minute, scobiform, 

 the loose coat produced at both ends A single known species. 



A. virgata T. & G. 1. c. Stems several from a deep-seated perennial 

 rootstock, 6-12 inches high or more, deep red or yellowish, thick and den- 

 sely scaly at base, more sparingly scaly above; lower scales ovate, acumin- 

 ate", the upper lanceolate passing into the linear bracts of the virgate 

 many-flowered spike: pedicels erect or spreading, 2-bracteolate : calyx 

 erosely dentate, shorter than the filaments. On dry wooded ridges of the 

 Cascade Mountains, Washington to California. 



PTEROSPORA Nut>. Gen. i, 269. 



Tall scapose scaly-bracted plants with red or yellowish flowers 

 in a long raceme. Calyx deeply 5 parted, persistent. Corolla 

 gamopetalous, globular-urceolate, with 5 short recurved lobes, 

 persistent, stamens 10, not exserted : filaments subulate- filiform: 

 anthers ovate-didymous, introrse, erect or in the bud horizontal- 

 inflexed, attached near the base, there dorsally 2-awned, the 



