ERICACEAE 889 



7-9 mm. long, somewhat constricted at the throat, the short lobes recurved : capsules sub- 

 globose, 4 mm. high, surpassed by the sepals. [Andromeda nitida Bartr.] 

 In sandy bogs and pine lands, Virginia to Florida and Louisiana. Spring. 



4. Pieris Mariana (L. ) B. & H. A shrub 1-2 m. tall with glabrate foliage and erect 

 or nearly erect branches. Leaves deciduous ; blades firm, oblong to oval, sometimes broad- 

 est slightly above or below the middle, 2-6 cm. long, obtuse or apiculate, somewhat reticu- 

 lated, short-petioled : flower-clusters in elongated racemes : pedicels about 1 cm. long, 

 club-shaped : calyx often puberulent : sepals lanceolate, about 5 mm. long, acute, firm in 

 age and slightly accrescent : corolla white or pinkish, ovoid-cylindric, 9-11 mm. long ; 

 lobes mostly spreading : filaments pubescent without, usually with 2 appendages below the 

 top : capsules ovoid-pyramidal, 7-9 mm. long. [Andromeda Mariana L.] 



In low grounds, Rhode Island to Florida, Tennessee and Arkansas. Spring. 



14. XOLISMA Eaf. 



Shrubs or trees, with terete branches. Leaves alternate : blades entire or nearly so, 

 sometimes persistent. Flowers perfect, in racemes or panicles. Sepals 4-6, broad, often 

 slightly united. Corolla white, subglobose to urn-shaped, with 4-6 recurved lobes. Stamens 

 8-12, included : filaments flat, incurved, pubescent : anthers not awned, opening by ter- 

 minal pores. Disk 8-12-lobed. Ovary 4-6-celled. Stigma truncate. Ovules numerous 

 in each cavity, pendulous. Capsule dry, loculicidally 4-6-valved. 



Flowers clustered in the axils of persistent leaf-like bracts : foliage lepidote-scurfy. 



Leaves conspicuously reduced towards the ends of the branchlets : blades prominently reticulated. 



1. X, fruticosa. 

 Leaves barely if at all reduced towards the ends of the branchlets : blades incon- 



spicously reticulated. 2. X. ferruginea. 



Flowers in racemes or panicles : leaves deciduous : foliage glabrous or pubescent. 



Racemes or panicles leafy-bracted. 3. X. foliosiflora. 



Racemes or panicles naked or nearly so. 4. X. ligustrina. 



1. Xolisma fruticosa (Michx. ) Nash. An evergreen erect shrub 1-1.5 m. tall, with 



scurfy young foliage. Leaves conspicuously reduced towards the ends of the branchlets ; 

 obovate to oblanceolate, acute or abruptly acuminate at both ends 



blades leathery, oval or obovate 



or sometimes obtuse, glabrous and reticulated above, prominently nerved beneath, revolute, 

 short-petioled : panicles narrow, leafy-bracted, often elongated : pedicels 4-10 mm. long : 

 calyx 2.5-3 mm. broad, accrescent and 6-7 mm. broad in fruit : sepals broader than long, 

 acute : corolla pale, subglobose, scaly, 3-4 mm. in diameter : capsules ovoid, 4-5 mm. 

 high. 5-6-ribbed. [Andromeda ferruginea var. fruticosa Michx.] 

 In sandy woods, South Carolina to Florida. 



2. Xolisma ferruginea ( Walt. ) Heller. An evergreen wide branching shrub or small 

 tree sometimes 5 m. tall, with scurfy twigs. Leaves barely if at all reduced towards the ends 

 of the branchlets ; blades leathery, elliptic to oval or obovate to oblanceolate, 2.5-7 cm. 

 long, glabrous above, acute or short-acuminate, revolute, scurfy-pubescent beneath, short- 

 petioled : panicles leafy-bracted : pedicels 5-10 mm. long : calyx 3.5-4 mm. broad : sepals 

 about as broad as long, abruptly-pointed : corolla white or pinkish, 2.5-3 mm. in diameter, 

 scurf v : capsules oblong-ovoid, or oval, 4-6 mm. high, 5-6-ribbed. [Andromeda ferruginea 

 Walt.] 



In pine lands, South Carolina to Florida. 



3. Xolisma foliosiflora (Michx.) Small. A widely branching shrub 1-4 m. tall, 

 with glabrous or sparingly pubescent foliage. Leaf-blades leathery, oblong to narrowly 

 elliptic or sometimes oval or obovate, 2-8 cm. long, acute or acuminate at both ends, dis- 

 tinctly serrulate, usually lustrous above, short-petioled : panicles copiously leafy-bracted : 

 pedicels 3-8 mm. long : calyx flattish, 3-4 mm. broad : sepals ovate or half-orbicular : co- 

 rolla white or pinkish, subglobose, 2-3 mm. in diameter : capsules subglobose or spheroidal, 

 3-3.5 mm. long, 5-6-ribbed. [Andromeda paniculata var. foliosiflora Michx.] 



In swamps and low pine lands, Virginia to Florida and Louisiana. Spring. 



4. Xolisma ligustrina ( L. ) Britton. A branching shrub 1-4 m. tall, with more or 

 less densely pubescent foliage. Leaves firm ; blades oblong, elliptic or obovate, 3-7 cm. 

 long, usually acute or abruptly acuminate, nearly entire or serrulate, narrowed into short 

 petioles: panicles elongated or cluster-like, naked: pedicels 1-6 mm. long: calyx 3.5-4 

 mm. broad : sepals triangular-ovate, acute or acutish, spreading : corolla white, subglobose 

 or ovoid-globose, 2.5-3.5 mm. in diameter: capsules spheroidal, 3 mm. in diameter, 5-6- 

 ribbed. [Andromeda ligustrina Muhl. ] 



In swamps and on hillsides, Canada to Florida and Arkansas. 



