18 ERICACEAE. 



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

 less coiiverginsi. Stamens 10, of ten declined : filaments subulate, naked. Style often de- 

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

 globose and 5-lobed, mnbilicate at ape.x and base, dehiscent from the base upward; the 

 edges of the valves cobwebby when opening. 



SuBOKDKR IV. MONOTROPE.E. 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 Pyrolece, one to Eri- 

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



Thirk I. EUMOXOTROPE.E. Ovary .5-celled, or .sometimes 4-celled ; the pla- 

 centpe projecting from the thick central columella. 



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



2S. ALLOTROPA. Calyx of 5 roundisli sepals, marcescent under the capsule. Stamens 

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

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

 Capsule globose. Seeds scobiform, linear. 



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



with tlie calyx persistent or marcescent, 



-1— 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 : fihiments subulate-filiform : anthers 

 ovate-didymous, introrse, erect, or in bud horizontal-indexed, fixed near the base, there 

 dorsally 2-awned : the slender awns deflexed ; tlie cells opening lengthwise. Disk none. 

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

 from the apex. 



•j— ^— Corolla campanulate, Avitli barel}^ spreading lobes, rather flesh}' : anthers muticous ; 

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

 ling the corolla, persistent : filaments slender. 



30. SARCODES. Stamens 10, sliorterthan thecylindraceous-campanulate corolla : antliers 

 linear-oblong, I'rect, inserted above the base; the two cells strictly coml)ined tiiroughout, 

 the whole apex o])eiiing by a large introrsely oblique terminal i)ore. Disk none. Ovary 

 low-conical an<l 5-lobed: .style colunmar, rather long: stigma cajjitate and somewhat 

 5-lobed. Capsule depressed-5-lobed. Seeds oval and with a small conical ])rotuberancc 

 at the apex. 



31. SCHWEINITZIA. Stamens 10, hardly shorter tlian tlie oblong-campanulate corolla, 

 this 5-gibbous at base: antliers short, somewhat didymous, introrsely i)endulous, being 

 attached dorsally near the apex ; the saccate cells opening by 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-pctalous and with the sepals or bractlets 

 tardily deciduous. 



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

 and oblong or spatulate scale-like fleshy petals, which are gibbous or saccate at base. 

 Stamens twice tl'.e number of the petals: filaments filiform-subulate: anthers somewhat 

 reniform ; the valves moderately or very dissimilar, l^isk 8-12-4oothed ; the teeth deflexed. 

 Style colunmar, tulmlar: stigma funnelform, with obscurely crenate margin. Capsule 

 ovoid; the columella verj- thick and fleshy. Seeds innumerable, very small, scobiform ; 

 nucleus minute in the loose-cellular elongated coat. 



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

 4 or 5 placentJB parietal and 2-lamellate. Di.sk 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-laciniate. Corolla of 4 or 5 oblong and finibriate-lacerate plane 

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

 ments ligulate-fiiiform : anthers linear, apiculate; the cells opening from base to apex 

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

 capitate or somewhat funnelforu). Capsule fleshy ' Seeds obovate, with a smootli or 

 polished close coat. 



