• ♦ • 



7J ERICACEiE. 



Suborder IV. ISIONOTROPEiE. 



Herbs, paraaitio upon roots: sterna juicy, scaly- bracted, not green. 



Stem striped, red or purple and white: sepals and bracts white .,....- 1© 



Stem brown-red or purplish-red, clammy, hairy 17 



Stem very thick; entire plant bright red , 18- 



Stem white, ta-vvny or reddish, fleshy; 19 and 20 polypetalous. 



Sepals 2 to 5, bract-like: petals 3 to 6, concave at base: style tubular 19 



Sepals and petals 4 or 5 each, lacerate-fringed, flat 20 



Sepals 2 or 4, petals united; filaments and style hairy 21 



1. VACCINHJM, Linnaeus. 



• CoroUa ovoid or globose^ 4-5-toothed: filamtnta smooth; antJtera 2 -atoned on the hack 



included: leaver deciduous. 



Flowers often 2 to 4 together; corolla usually 4-toothed, leaves entire 1, 2 



Flowers solitary, axillary: corolla usually 5- toothed: calyx not deeply lobed. 



Usually less than a foot high; leaves serrate 3, 4 



Usually several (1 to 12) ft, high; branches spreading 6, 6, 7 



CoroUcL obovoid or campanulate, 5 toothed: leaves evergreen 8 



Corolla deeply 4-pcirted, lobes reflexedy pale rose'Colori leaves evergreen 9 



1. V. uligpiosum, From a span to 3 or 4 ft. high: leaves thick and veiny. 



2. V. occidentale, Gr. Leaves thinner, less veiny: flowers mostly solitary. 



3. V. caespitosum, Michx. Branches not angled: berries blue. Very variable. 



4. V. Myrtillus, L. var. microphyllum. Hooker. Branches sharply angled. 



5. V. myrtilloides, Hooker. Branchlets slightly angled: leaves serrulate, veiny. 



6. V. ovalifolium, Smith. Smooth, 4 to 12 ft high; branchlets angled. 



7. V. parvifolium, Smith. Smooth; branchlets green, jointed, sharply angled. 



8. V. ovatum, Purah. Rigid; leaves ovate or narrower, serrate: flowers clustered. 



9. V. oxycoccus, !•. var. mtermedium, Gr. Trailing, slender: flowers umbellate. 



2. ARBTJTTJS, Toumefort. 



1. A. Henziesii, Purah. Leaves 3 to 5 inches long; corolla white, broad -ovoid. 



8. ARCTOSTAPHYIiOS, Adanson. 



a. Seeds not united or easily separable. 



Low or creeping, rising only a foot or two: flowers 1 or 2 lines long. 



Trailing or creeping, green, no bristly hairs, ovary and fruit glabrous. . 1, 2 



Erect: leaves mostly not an inch long: flowers more numerous 3, 4, 6 



Erect, 3-20 ft. high: flowera 3-4 lines long: fruit 4-5 lines thick 8, 7, 8 



h. Seeds united into a solid woody or bony stone QtolS 



\^ A. Uva-ursi, Spreng. Leaves oblong-spatulate, retuse, tapering to petiole. 



