Empetrum. CXXII. EMPETRACEiE. 489 



spikelets; sty. 6, twice bifid; stamincdc JJs. capitate, crowded. — (T) Grows in 

 sandy prairies, 111. to the sources of the Missouri. 



2. C. ELi.iPTULM. Nutt. (Crotonopsis elliptica. Willd.) 



P//7«/ clothed with a stellate pubescence; lis. elliptical-ovate, the older 

 ones obtuse at apex, sinoothish and green on the upper surl'ace; Jls. glomerate; 

 sty. 3, bifid ; caps, angular, 2-seeded. — 111. Mead, and Mo. 



3. C. GLAN'DU.OsrM. 



St. trichotomous; lis. oblong, serrate, hairy beneath, nearly entire, and 

 bearing 2 glands at the base ; aplkcs of flowers situated in the division of the 

 stem. — 111. {Mead), river bottoms. 



(). PHYLLANTHUS. 



Gr. <pv\\ov, av^oi ; the leaves of the original species bear flowers at the edges. 



Flowers <?. — d Calyx persistent, with 6 spreading, colored seg- 

 ments ; stamens 3, very short, filaments united at base, anthers didy- 

 mous. 9 Calyx as in the d" ; styles 3, bifid ; capsule 3-cclled ; 

 cells 2-valved, 1 — 2-seeded. — Herbs or shrubs with alternate^ stipulate 

 leaves a /id minute, axillary Jlowers. 



P. Carolinexsis. Walt. (P. obovatus. Willd.) 



St. erect, herbaceous, with alternate branches ; Irs. simple, entire, gla- 

 brous, oval and obovate, obtuse, slightly petioled;^s. few, subsolitary, axillary. 

 — ® A small-leaved, delicate planlf, Penn. ! to 111. ! Stem 6 — 10' high, slender, 

 the branches filiform. Leaves of the stem 6 — 8" by 4 — 5", of the branches 

 twice, and of the branchlets four times smaller. Flowers 1 — 3 in each axil, 

 the (^with the <^ , ^ — I" diam., whitish. July, Aug. 



7. BUXUS. 



The Greek name of this plant was 0v|of . 



Flowers c? . — d Calyx 3-leaved ; petals 2 ; sta. 4, with the rudiment 

 of an ovary. 9 Cal. 4-sepaled ; pet. 3 ; sty. 3 ; caps, with 3 beaks 

 and 3 cells ; seeds 2. — Shrubs. Lvs. evergreen., opposite. 



B, sEMPERviRENs. Box. — Lvs. ovate] pet ioks hairy at edge; a7ith. ovate, 

 saggittate. — Var. an gust If alia has narrow, lanceolate leaves. Var. suffrnticosa, 

 the dwarf box has obovate leaves and a stem scarcely woody, highly esteemed 

 for edgings in gardens. — The box with its varieties is native of Europe. 



Order CXXII. EMPETRACE^.— Crowberries. 



Shmbs small, evergreen, heath-like, with exstipulate leaves and minute, axiUary flowers. 



Fis. dinecious. Cal. consistinjrof hypogynous, imbricated scales. 



Sta cciual in number to the inner sepals and alternate with them. 



Ova. 3— 9-cclled, with a single erect ovule in each cell. 



Stijlcs short or 0. S/isryjias lobed and orten lacerated. 



PV.— Drupe seated in the i>ersistent calyx, containing 3—9 bony nucules. 



Sds. solitary, ascending, albuminous. Radicle inferior. 



Genera 4. species 4. natives of Europe, North America and the Straits of Magellan. They are acrid. 

 The berries are used for food in Greenland. 



Genera. 



"^ J 6— 9-seeded. E7npetrum. 1 



Drupe \ 3-seeded. OaJcesia. 2 



1. EMPETRUM. 



G>\ ev, upon, iTcrpos, a stone ; from the places of its natural growth. 



Flowers 9 S". Perianth consisting of 2 series of sepaloid scales, 

 d^ Stamens 3, anthers pendulous on long filaments. 9 Styles 6 — 9, 

 very short, erect, or ; stigmas oblong, radiate-spreading ; drupe 

 globose, 1 -colled ; seeds G — 9. — Low, alpine shrubs. 



E. NIGRUM. Crowberry. 



Procumbent; branches smooth; lvs. imbricated, linear-oblong, obtuse at 



