69-1 



ERICACEAE. 



Vol. II. 



Corolla 4-S-toothed, the short teeth spreading or recurved. Stamens 8 or lo, included ; antlicr 

 with 2 recurved dorsal awns. Ovary 4-5-celled ; ovules i in each cavity. Drupe globose, 

 with 4 or 5 separate i-seeded nutlets. [Greek, referring to its shining leaves.] 

 A monotypic genus of the arctic zone and high mountain summits. 



I. Mairania alpina (T..) Desv. Alpine or Black Bearberry. Fig. 3250. 



Arbutus al['ina L. Sp. PI. 395. 1753. 



Mairania alpina Desv. Journ. Bot. (II) i: 37, 292. 1813. 

 Arcloslaphylos alpina Spreng. Syst. 2: 287. 1825. 

 Arctous alpina Niedenzu, Engl. Bot. Jahrb. 11 : 141. 1890. 



Tufted or depressed-prostrate; branches 2'-^' high, the 

 twigs glabrous or very nearly so. Leaves obovate, crenu- 

 late, conspicuously reticulate-veined, ciliate at least when 

 young, V-i' long, 3"-/" wide; flowers few, appearing 

 from scaly buds before or with the leaves ; corolla white, 

 ovoid, constricted at the throat; drupe black (or bright 

 red. according to INIacoun), juicy, 2"-s" in diameter. 



Summits of the higher mountains of New England ; Que- 

 bec to Newfoundland, Alaska and British Columbia. Also in 

 northern Europe and .\sia. Summer. 



Soc. 6: 



25. CALLUNA Salisb. Trans. Linn. 

 317. 1802. 



A low much branched evergreen shrub, with minute 

 linear opposite crowded and imbricated leaves, and small 

 white or pink flowers, in terminal one-sided dense, spike- 

 like racemes. Sepals 4, scarious, concave, obtuse, longer 

 than and concealing the corolla. Corolla campanulate 

 when expanded, 4-parted, slightly twisted, persistent, becoming scarious. Stamens 8, distinct; 

 filaments short; anthers oblong, attached to the filaments by their backs, opening by a longi- 

 tudinal slit, each sac with a dorsal reflexed appendage. Disk 8-lobed. Ovary depressed- 

 globose, 8-angled ; style slender ; stigma capitel- 

 late. Capsule somewhat 4-sided, 4-celled, sep- 

 ticidally 4-valved, few-seeded. Seeds ovoid, 

 pendulous, not winged. [Greek to sweep, its 

 twigs used for brooms.] 



A monotypic genus of Europe and Asia. 



I. Calluna vulgaris (L.) Salisb. Ling. 

 Heather. Moor. Besom. Fig. 3251. 



Erica vulgaris L. Sp. PI. 352. 1753. 



C. vulgaris Salisb. Trans. Linn. Soc. 6: 317. 1802. 



A straggling shrub, the branches ascending, 

 3-15' high, the twigs puberulent or glabrous. 

 Leaves sessile, about i" long, very numerous, 

 imbricated in 4 rows, usually 2-auricled at the 

 base, 3-angled, grooved on the back, glabrous, 

 ciliate or canescent : calyx with 4 small bracts at 

 the base; corolla about li" long, nearly concealed 

 by the 4 scarious pink or white sepals. 



Sandy or rocky soil, Newfoundland to New Jersey. 

 Naturalized or adventive from Europe. Grig. July- 

 Sept. 



Erica cinerea L., the Scotch heath, found at one 

 spot on Nantucket Island, has an ovoid 4-toothed 

 corolla, much longer than the calyx (about 3" long) 

 and linear leaves, mostly verticillate in 3's. 



Erica Tetralix L.. the cross-leaved heath, also on 

 Nantucket, has a similar corolla and linear leaves 

 verticillate in 4's. Both are waifs from Europe. 



Family 5. VACCINIACEAE Lindl. Veg. Kingd. 757. 1847. 



HrCKLEr.ERRV F-\MILY. 



Erect or prostrate shrubs, or small trees, with alternate simple leaves, and 

 small clustered or solitary perfect flowers, the pedicels commonly bracted. Calyx- 

 tube adnate to the ovary, the limb 4-5-lobed or 4-5-cleft. Corolla gamopetalous, 

 4-5-lobed, or rarely divided into separate petals, deciduous, globose, campanulate. 

 urceolate, or tubular. Stamens twice as many as the corolla-lobes, epigynous, or 



