288 ERiCACK.E. (heath family.) 



IS. Rtiododenclron. Corolla bell-shaped or funnel-form. Stamens 10. Leaves evergreen. 

 10. Hhoduru. Corolla irri-'Kuliir, two iietals nearly separate. Stamens 10. Leaves deciduous. 



20. Lirduin. Corolla rejrular, all 5 petals nearly separate. Stiimens 5 - 10. Leaves evergreen. 



* • Anther-cells opening lengthwise. Leaves evergreen. Bud-scales firm and persistent. 



21. Liulseleiiria. Corolla deeply 5-cleft. Stamens 5, included. 



22 lieiopliylluin. Corolla of 5 separate i)etals. Stamens 10, exserted. 



SuBOKDER III. PYKOLE.E. Pyrola Family. 



Calvx free from tlic ovary. Corolla polypctaloiis. Anthers extrorse 

 in the bud. Seeds with a loose and translncent cellular coat much larger 

 than the nucleus. — jJsearly herbaceous and broad-leaved evergreens. 



23. Pjtrola. Flowers in a raceme. Petals not widely spreading. Filaments awl-shaped. 

 Style long. Valves of the potl cobwebby on the edges. 



21. Aluiieses. Flower single. Petals widely spreading. Filaments not dilated in the mid- 

 dle : anthers conspicuously 2-horned. Style straight, exserted : stigma 5-rayed. Vahes 

 of the pod smooth on the edges. 



25. Chimaphiln. Flowers corymbed or umbelled. Petals widely spreading. Filaments 



dilated in the middle : anthers 2-horned. Style very short and top-shaped, covered by a 

 broad and orbicular stigma. Valves of the pod smooth on the eilges. 



Suborder IV. ITIONOTKOPEiE. Indian-pipe Family. 



Flowers nearly as in Suborders 2 or 3, but the plants herbaceous, root- 

 parasitic, entirely destitute of green foliage, and with the aspect of Beech- 

 drops. Seeds as in Suborder 3. 



* Corolla monopetalous : anthers 2-celIed. 



26. Pterospora. Corolla ovate, 5-tfiothed : anthers 2-awned on the back, opening lengthwise. 



27. SchM'einltzia. Corolla broadly bell-shaped, 5-lobed : anthers opening at the top. 



* * Corolla of 4 or 5 separate petals : calyx imperfect or bract-like. 



28. nionotropa. Petals narrow. Anthers kidney-shaped, opening across the top. 



1 . G A Y L U S S A C I A , II. B. K. Huckleueruv. 



Corolla tubular, ovoid, or bell-shaped; the border 5-clcft. Stamens 10: an- 

 thers awnlcss; the cells tapcrinj^ upward into more or less of a tube, o])cnin<; by 

 a eliiuk at the end. Fruit a bcrry-likc drupe, containing 10 seed-like nutlets. — 

 Branching shrubs, with the aspect of Vaccinium, comnioidy sprinkled with res- 

 inous dots; the flowers (white tinged with purple or red) in lateral aiKl bractcd 

 racemes. (Named for the distinguished chemist, Gaij-Lussac.) 

 * Leaves thick and everqri-en, not reslnous-dotled. 



1. G. brach^cera. Gray. (Box-Huckleberry.) Very smooth (l°high) ; 

 leaves oval, tinciy crcnate-toothed ; racemes short and nearly sessile; pedicels 

 very short ; corolla cylrndrical-bell-shapcd. — Dry Woods, Perry Co., I'cnnsyl- 

 vania, near Bloomfield (Prof. Buird), and motintainsof Virginia. May. — Leaves 

 in shape and aspect like those of the Box. 



* * Lmves deciduous, entire, sprinkled more or /ess irit/i rrsinous or irari/ ntoms. 



2. G. dum6sa, Ton-. & Gr. (DwAUF IltcKLEBEiiuy.) Somewhat hairy 

 and glandular, low (l°-5° high from a creeping base), bushy; Imves obovate- 



