18 ERICACE^. 



27. PYROLA. Flowers in a raceme, 5-merous. Petals concave or incurved and more or 

 less converging. Stamens 10, often declined : filaments subulate, naked. Style often de- 

 clined or turned downward : stigma 5-lobed or toothed and annulate. Capsule depressed- 

 globose and 5-l()bcd, umbilicate at ape.x and base, dehiscent from tlie base upward; the 

 edges of the valves cobwebby when opening. 



SuBORDKR IV. MONOTROPEJE. Calyx free from the ovary. Pollen- 

 grains simple. Capsule loculicidal. — Herbaceous root-parasites or saprophytes, 

 scaly, destitute of all green herbage, one closely related to Pyroleee, one to Eri- 

 cinecE, the others more peculiar. (Proc. Am. Acad. vii. 370.) 

 Tribp: I. EUJIONOTROPEyE. Ovary 5-celled, or sometimes 4-celled ; the pla- 

 centas projecting from the thick central coknnella. 



* Anthers extrorse, in flower becoming introrsely pendulous : corolla none. 



38. ALLOTROPA. Calyx of 5 roundish sepals, marcescent under the capsule. Stamens 

 10 : anthers didymous, on long and slender filaments : cells opening by a chink from the 

 apparent apex to the middle. Disk none. Style short : stigma large, peltate-capitate. 

 Capsule globose. Seeds scobiforni, linear. 



# * Anthers introrse or introrsely pendulous from the first : corolla gamopetalous, and 



with the calyx persistent or marcescent, 



^— Globular-ovate, with 5 short recurved lobes or teeth : anthers 2-awned. 



29. PTEROSPORA. Calyx deeply .5-parted. Corolla globular-urceolate ; the lobes con- 

 volute or mostly so in the bud. Stamens 10, included : filaments subulate-filiform : antliers 

 ovate-didymous, introrse, erect, or in bud horizinital-inflexed, fixed near the base, there 

 Jorsally 2-awned'; the slender awns deflexed; the cells opening lengtliwise. Disk none. 

 Style short : stigma 5-lobed. Capsule depressed-globular, 5-lobed. Seeds broadly winged 

 from the apex. 



•H- -y- Corolla campanulate, with barely spreading lobes, rather fleshy : antliers niuticous : 

 seed-coat reticulated, but conformed to the nucleus : sepals 5, oblong, erect, nearly equal- 

 ling the corolla, persistent : filaments slender. 



30. SARCODES. Stamens 10, shorter than the eylindraceous-campanulate corolla : anthers 

 linear-oblong, erect, inserted above the base; the two cells strictly combined tlirouglumt, 

 the whole apex opening by a large introrsely oblique terminal pore. Disk none. Ovary 

 low-conical and 5-lobed: style columnar, rather long: stigma capitate and somewhat 

 5-lobed. Capsule depressed-5-lobed. Seeds oval and with a small conical protuberance 

 at the apex. 



31. SCHWEINITZIA. Stamens 10, hardly shorter than the oblong-campanulate corolla, 

 this 5-gibbous at base : anthers short, somewhat didymous, introrsely pendulous, being 

 attached dorsally near the apex ; the saccate cells opening hy the whole apex as a large 

 pore. Disk 10-crenate. Ovary globose-ovate : style short and thick : stigma large, 

 5-sided, umbilicate. 



# # * Anthers innate or transverse on the apex of the filament, opening across the top ; 

 the cells more or less confluent: corolla 4— 5-petalous and with the sepals or bractlcts 

 tardily deciduous. 



32. MONOTROPA. Sepals of 2 to 5 lanceolate bract-like scales. Corolla of 4 to 6 erect 

 and oblong or spatulate scale-like flesliy petals, which are gilibous or saccate at base. 

 Stamens twice the number of the petals: filaments filiform-subulate: anthers somewdiat 

 reniform ; the valves moderately or very dissimilar. Disk 8-12-toothed ; the teeth deflexed. 

 Style Columnar, tubular: stigma funnelform, with obscurely erenate margin. Capsule 

 ovoid; the columella very thick and fleshy. Seeds innumerable, very small, scobiforni; 

 nucleus minute in the loose-cellular elongated coat. 



Tribe II. PLEURICOSPORE.E. Ovary one-celled or spuriously 4-5-celled; the 

 4 or 5 placentfe parietal and 2-lamenate. Disk none or obscure: anthers linear or 

 oblong, erect, introrse, fixed by the base to the long and slender filaments, opening 

 longitudinally. 



33. PLEURICOSPORA. Calyx complete, of 4 or 5 oblong-lanceolate scale-like sepals, 

 their margins fimbriate-Iaciniate. Corolla of 4 or 5 oblong and fimbriate-hicerate plane 

 petals, resembling but rather shorter than the sepals. Stamens 8 or 10, glabrous : fila- 

 ments hgulate-filiform : anthers linear, apiculatc ; the cells opening from base to apex 

 into two equal valves. Ovary ovate, strictly one-celled : style columnar : stigma depressed- 

 capitate or somewhat funnelfOrm. Capsule fleshy ? Seeds obovate, witii a smooth or 

 polished close coat. 



