ERICACl::^^. (lIliATII FAMILY.) 801 



21. LOISELEURIA, Dcsv. Alpine Azalea. 



Calyx 5-pnrtc(l, nciirly as long as tlic rather l)cll-sha[)C(l and deeply 5-cleft reg- 

 ular corolla. Stamens 5, not declined, included : antiiers opening lengtiiwise. 

 Style short. Pod ovoid, 2 - 3-ccllcd, many-seeded, 2-3-valved; the valves 2- 

 cleft from the apex: placenta; borne on the middle of the columella. — A small 

 depressed evergreen shrubby plant, nmch branched and tufted, smooth, with 

 coriaceous oi)posite elli])tical leaves, on short jietioles, with ruvolute margins. 

 Flowers small, wiiite or rose-color, 2-5 in a cluster, from a terminal scaly bud; 

 the scales or bracts thick and persistent. (Named for Loisdeur Delongcliumps, n 

 Frcncii butaiii>t.) 



1. L. prociimbens, Desv. (Azalea procumbcns, /..) — Alpine summits 

 of the White Mountains, New Hampshire, on rocks. June. (Eu.) 



22. LEIOPHYLLUM, Pers. Sand Myrtle. 



Calyx ."j-parted. Corolla of 5 distinct obovatc-oblong petals, spreading. Sta- 

 mens 10, exserted : anthers opening lengthwise. Pod 2-3-celled, splitting from 

 the apex downward, many-seeded. — A low much-branched evergreen, with the 

 aspect, foliage, &c. of the preceding genns, but the crowded leaves sometimes al- 

 ternate, scarcely petioled. Flowers small, white, in terminal umbel-like clusters. 

 (Name formed of Xfiof, smooth, and (f)i\\ov,folki(je, from the leaves.) 



1. L. buxif61ium, Ell. — Sandy pine barrens of New Jersey, and moun- 

 tain-tops in Virginia? and southward. May. — Shrub 6' -10' high: leaves 

 oval or oblong, smooth and shining, 3' - 6" long. 



23. PYROLA, Toum. Wintergreex. Shin-leaf. 



Calyx 5-parted. persistent. Petals 5, concave and more or less converging, 

 deciduous. Stamens 10: filaments awl-shaped, naked: anthers extrorsc in the 

 bud, but in the flower inverted by the inflexion of tiie apex of the filament, more 

 or less 4-cellcd, opening by a pair of pores at the blunt or somewhat 2-horned 

 base which by the inversion becomes the apparent apex ! Style generally long : 

 stigma 5-lobed or 5-rayed. Pod depressed-globose, 5-lobed, 5-celled, 5-valved 

 from the base upwards (loculicidal) ; the valves cobwebby on the edges. Seeds 

 minute, innumerable, resembling saw-dust, with a very loose cellular-reticulated 

 coat. — Low and smooth perennial herbs, with running subterranean shoots, 

 bearing a cluster of rounded and petioled evergreen root-leaves, and a simple 

 raceme of nodding flowers, on an ujjright more or less scaly-bracted scape. 

 (Name a diminutive of Pyrun, the Pear-tree, from some fancied resemblance 

 in the foliage, which is not obvious.) 



§ 1 . Stamens ascending : sfi/le turned down and tuwaids the ajtex ttsual/i/ more or less 

 cvrccd upwards, longer than the campamdate-conniiient or somewhat er/ianding 

 jH'tids: stigma much narrower than the truncate and somewhat crcacntcd ujtex of 

 the stifle which forms a sort of ring or collar, the 5 Wv.s otjiist very short iiud in- 

 cludi d, at length vsuallij protruded. ( Le<ives denticulate or entire. ) 

 1. P. rotundifdlia, L. La ares orliicular, thirl:, shining, usually shorter 

 than the petiole ; rae^jme elongated, many-tlowcrcd ^ .calyx-lobes lamedatu or Mong' 



