GENUS 7. 



HUCKLEBERRY FAMILY. 



2. Oxy coccus macrocarpus (Ait.) Pursh. Large 

 or American Cranberry. Fig. 3276. 



Vaccinium macrocarpon Ait. Hort. Kew. 2: 13. pi. 7. 1789. 



O. palustris macrocarpus Pers. Syn. I : 419. 1805. 



Oxy coccus macrocarpus Pursh, Fl. Am. Sept. 263. 1814. 



Similar to the preceding species, but stouter and 

 larger, the branches often 8' long. Leaves oval, oblong, 

 or sometimes slightly obovate, obtuse at both ends, 

 entire, 3"-9" long, i"-4" wide, white or pale beneath, the 

 margins slightly revolute; flowers several in mostly 

 lateral somewhat racemose clusters, nodding on erect 

 pedicels, 2-bracteolate above the middle; corolla light 

 pink, 4"~5" broad, divided very nearly to the base ; fila- 

 ments puberulent, about one-third the length of the 

 anthers; berry oblong or nearly globose, 4"-9" long. 



In bogs, Newfoundland to western Ontario, Virginia, 

 West Virginia, Michigan and Arkansas. Bear-berry. 

 Marsh-cranberry. June-Aug. Fruit ripe Sept.-Oct. 



3. Oxycoccus erythrocarpus (Michx.) Pers. 

 Southern Mountain Cranberry. Fig. 3277. 



Vac. erythrocarpum Michx. Fl. Bor. Am. i : 227. 1803. 

 Oxycoccns erythrocarpus Pers. Syn. i : 419. 1805. 



A divergently branched shrub, i-6 high, the twigs 

 pubescent or glabrous. Leaves thin, green both sides, 

 paler beneath than above, reticulate-veined, ovate, ovate- 

 lanceolate, or ovate-oblong, acuminate at the apex, 

 rounded, subcordate or the terminal ones narrowed at 

 the base, finely serrulate with bristle-pointed teeth, flat, 

 i '-3' long, i'-i' wide; flowers solitary in the axils; 

 peduncles pendulous, filiform, usually minutely 2-brac- 

 teolate at the base and less than one-half as long as the 

 leaves ; corolla deeply 4-parted, red, about 5" broad ; 

 filaments villous, about one-fourth the length of the 

 anthers; berry globose, dark red, 2"-$" in diameter. 



In woods, mountains of Virginia to Georgia. June-July. 

 Fruit ripe July-Sept. 



Family 6. DIAPENSIACEAE Link. Handb. i : 595. 1829. 



DIAPENSIA FAMILY. 



Low tufted shrubs, or perennial scapose herbs, with alternate or basal simple 

 exstipulate leaves, and small white pink or purple gamopetalous or polypetalous 

 perfect and regular flowers, solitary in the axils, or racemose at the summit of 

 scapes. Calyx 5-parted, persistent ; sepals imbricated in the bud. Corolla 5-lobed, 

 5-cleft, or 5-parted, deciduous. Stamens 5, inserted on the throat of the corolla 

 and alternate with its lobes, or connate, sometimes with as many alternating 

 staminodia ; anther-sacs longitudinally or transversely dehiscent ; pollen-grains 

 simple. Disk none. Ovary free from the calyx, superior, 3-celled ; style mostly 

 stout, persistent; stigma 3-lobed; ovules few or numerous in the cavities, ana- 

 tropous or amphitropous. Capsule 3-celled, loculicidally 3-valved. Seeds minute, 

 the testa loose or close; endosperm fleshy; embryo terete; cotyledons short; 

 radicle elongated. 



Six genera and about 8 species, natives of the northern hemisphere. 

 Low tufted evergreen shrubs ; corolla gamopetalous. 



Tufted arctic-alpine shrub ; flowers terminal, peduncled. i. Diapensia. 



Trailing shrub ; flowers solitary, sessile. 2. Pyxidanthera. 



Tall scapose perennial herb ; flowers spicate-racemose ; petals separate. 3. Galax. 



i. DIAPENSIA L. Sp. PI. 141. 1753. 



Densely tufted glabrous low evergreen shrubs, with thick rather fleshy imbricated nar- 

 row leaves, and solitary terminal erect peduncled white or pink flowers. Calyx 2-4-bracted 

 at the base, the sepals oval, obtuse, somewhat rigid. Corolla campanulate, tardily deciduous, 

 5-lobed, the lobes obtuse. Stamens 5, inserted at the sinuses of the corolla; filaments short 



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