VACCINIUM 



B.M. 3429 It is doubtful if varieties can be distin- 

 guished. Var. arhuscula, (iray, passes into the ordinary 

 form; while vars. angustifolium, Gray, and cuneifolium, 

 Nutt., are found to he simply forms produced by shade. 

 The last form, particularly, is common in New Eng- 

 land, and early in the season the Ivs. are of the ordinary 

 obovate type, while later they become elongated. 

 Recommended by Warren H. Manning for the rock 

 garden. 



11. Pennsylvanicum, Lam. Low BLUEBERRY. Fig. 

 2G30. A dwarf shrub, 6-15 in. high: Ivs. membrana- 

 ceous, oblong-lanceolate or oblong, distinctly serrulate 

 with bristle-pointed teeth, mostly shining on both sides 

 but often hairy on midrib beneath: fls. on short pedi- 

 cels; corolla campanulate-cylindrical, short: berries 

 large, globose, bluish black with bloom, sweet, the 

 earliest to ripen north. N. Amer. B.M. 3434. B.B. 

 2:578. Em. 2:456. Rep. Me. Exp. Sta. 1898: 171. -Var. 



2630. Vaccinium Pennsylvanicum Low Blueberry (X%). 



angustifolium, Gray. A dwarf form, with more decid- 

 edly lanceolate Ivs. Lake Superior and northward. 

 This species is extremely variable in size and shape 

 of fruit and flowers, but with the exception of the va- 

 riety noted and the black -fruited form often asso- 

 ciated with it. which is set off as V. niijnim, the varia- 

 tions do not appear sufficiently constant to warrant mak- 

 ing separations. In general, "the plant is of low, semi- 

 prostrate habit, is extremely prolific and thrives on dry, 

 sandy hills. It furnishes the bulk of the Blueberries 

 found iii tin- eastern markets. When mown down or 

 burned, the new erect shoots produce, the following 

 year, a long, spike-like mass of bloom and fruit which 

 may be stripped off by handfuls. Because of its charac- 

 ter and early-ripening habit, it is known on the Blue- 

 berry plains as "Early Sweet" or "Low Sweet." 



12. nigrum, Britton. Low BLACK BLUEBERRY. Low 

 shrub, similar to \'. Pennsylvanicum, and often asso- 

 ciated with it: Ivs. oblong-lanceolate to obovate, finely 

 serrulate, green above, pale and glaucous beneath: fls. 

 few in the clusters, white or cream-colored, appearing 

 earlier than those of V. PetniKiilnniii-um: berries rather 

 small, black without bloom. Dry rocky soil, N. Amer. 

 B.B. _>:.-) 7! I. Hep. Me. Exp. Sta., 1898:171. -This species 

 is distinguished from the preceding by the glaucous 

 under surfaces of the leaves and by the characteristic 

 shining black fruit. It is usually found in colonies in 

 the same situations as I'. Pintuylvanieumf but occa^ 

 aionally the two species will be found intermingled. 



VACCINIUM 



13. Canad6nse, Hichards. CAN.M.A BI.I M.KKUV. I 

 shrubs, 1-2 ft. high, tin- crowded branc-hlets downy- 

 pubescent: Ivs. oblong-lai date or ellipti. 



downy on both sides: corolla short, open-campanulate. 

 greenish white, often tinged with red: berries ^ 

 or oblate, blue with much bloom, of excellent flavor. 

 Low woods, Hudson Bay to Bear Lake and the north- 

 ern Rocky Mts.; south to New Eng., nits, of Pa. and 

 111. B.M. 344G. B.B. 2:578. -This specie-, commonly 

 known as "Velvet Leaf "or "Sour Top" becuu-e of the 

 character of its foliage and the somewhat acid fruit, 

 usually grows in rather moist, rocky, not swampy, lo- 

 calities. The fruit is larger and more acid than the 

 other low forms and matures from one to three weeks 

 later. It is not so popular in the general market as the 

 sweeter kinds, but it is very prolific and its lateno- in 

 ripening is a point in its favor. 



14. hirsutum, Buckley. HAIRY HUCKLEBERRY. BEAR 

 HUCKLEBEKKY. Low shrub, 1-2 ft. high: steins green, 

 grooved, obscurely 4-angled, those of the current year 

 covered with stout, spreading white hairs: Ivs. ovate, 

 entire and, together with the pure white campanulate 

 corolla, the calyx and the dark blue globose fruit, hirsute. 

 Very local in N. C., Ga. and Tenn. G.F. 2:'M5. This 

 species, discovered about 1840, was lost sight of for half a 

 century until rediscovered by Sargent and transferred 

 to the Arnold Arboretum. It is readily distinguished by 

 the hairy flower and fruit. The fruit is described as 

 fully as large as that of Gaylussacia rexinosa, shining 

 black, and of an agreeable flavor. Under cultivation 

 not so densely hairy as in the wild state. Gives prom- 

 ise of being valuable under cultivation as one of the 

 latest of its kind to ripen, at the Arnold Arboretum 

 the best period of fruitage being the middle of August, 

 berries remaining into September. 



15. myrtilloides, Hook. An erect, branching shrub, 

 mostly glabrous throughout, the twigs slightly angled: 

 Ivs. oval, oblong or ovate, acute, serrate, membranous, 

 green on both sides but not shining, 1-2 in. long: calyx 

 entire; corolla depressed-globular, yellowish or green- 

 ish white: berries large, oblate, black, rather acid. 

 Lake Superior westward. B.M. 3447. The berries are 

 large, %-% in., oblate, with broad calyx, of excellent 

 flavor; much relished by the natives of the northwest. 



16. ovalifdlium, Smith. A slender, straggling, 

 branched shrub 3-12 ft. high, with slender more or less 

 angled branchlets: Ivs. oval, obtuse, glabrous, green 

 above, glaucous beneath : fls. solitary, on short, re- 

 curved pedicels; corolla globose-ovoid: berry large, 

 Vy-Vi in., bluish purple, with bloom. Woods, Quebec to 

 Mich., Ore. and Alaska. B.B. 2:577. -This species is 

 very abundant in the northwest, forming a large part 

 of the undergrowth along the southern coast of Ala-k:i 

 (Funston). The berries, rather larger than peas, are 

 collected in great quantities by the Indians, who use 

 them fresh and dry them for winter. The exception- 

 ally large berries and vigorous habit of this species 

 suggest its value for cultivation and particularly for 

 crossing with the low -growing species, such as V. 

 Pennsylvanicum and Canadense. 



17. virgatum, Ait. A shrub 3-12 ft. high, with slen- 

 der green branches, the young twiirs pul.erulent . l\-. 

 narrowly oval-oblong, acute, often mucronate, entire or 

 minutely serrulate, green and glabrous above, pale or 

 glaucous beneath, %-2 in. long: fls. in short racemes 

 on naked twigs, appearing before the Ivs.; corolla 

 nearly cylindiical, white or pink: bracts small, decidu- 

 ous- berrv black, with or without bloom. Swamps, 

 southern Va. to Fla. and La. B.B. 2::.77. B.M. :::,.'. 

 B.R. 4:302 (as V. fuscatum). The distinction between 

 this species and the next is very slight. It is probable 

 that, possibly excepting var. trnellmii, this is only a 

 southern form of V. c<>rymbosum and should be re- 

 duced to varietal rank. 



Var. tenellum, Gray ( V. tentllum, Att., not Pursh). 

 A low form, mostly less than 2 ft., with smaller Ivs. 

 and nearly white IN in short, close rlnsier*. Southern 

 Va. to Ark., Fla. and Ala. Probably a distinct species. 



18 corymbosum, Linn. HIOH-BUSH BLUEBERRY. 

 BWAHF Mr. KI.K.HKKKY. Fig. 2631. A tall, straggling 

 shrub 4-12 ft. high, with yellowish green warty branch- 



