A glabrous branching or rarely simple shrub. Leaves coriaceous, linear or oblong, entire, revolute-margined, evergreen, short-petioled, white-glaucous beneath. Flowers small, white, drooping, in terminal umbels. Calyx deeply 5-parted, persistent, the lobes not imbricated. Corolla globose-urceolate, 5-toothed, the teeth recurved. Stamens 10, included; filaments bearded; anthers attached to the filaments at about the middle, ovate, obtuse, the sacs opening by large terminal pores, each with an ascending awn. Disk 10-lobed. Ovary 5-celled; style columnar; stigma simple; ovules numerous. Capsule subglobose, 5-angled, loculicidally 5-valved, many-seeded, the top intruded. Seeds oval, spreading in all directions, the testa smooth, coriaceous, shining. [Named for Andromeda of mythology.]

A monotypic genus of the north temperature and subarctic zone.

16 Andromeda L Sp Pl 393 1753 1583

1. Andromeda Polif˛lia L. Wild Rosemary. Marsh Holy Rose. Moorwort

Fig. 3241

Andromeda Polifolia L. Sp. Pl. 393. 1753.

A. glaucophylla Link, Enum. Hort. Berol. 1: 394. 1821.

A shrub, 1°-3° high, usually little branched, the foliage acid. Leaves linear, linear-oblong or lanceolate-oblong, sometimes slightly spatulate, acute or obtusish, mucronulate, narrowed at the base, dark green above, prominently white-glaucous beneath, 1'-2 1/2' long, 2"-4" wide, the margins strongly revolute; petioles about 1" long; umbels few-flowered, terminal; bracts small, ovate, persistent; pedicels 4"-6" long, straight or somewhat curved; calyx-lobes triangular-ovate, acute; corolla 3-3" in diameter; capsule about 2" in diameter, about as long as the persistent style.

In bogs, Labrador and Newfoundland through arctic America to Alaska, south to northern New Jersey, Pennsylvania, Michigan and British Columbia. Also in northern Europe and Asia. Consists of several races, the southern {A. glaucophylla) with shorter and more curved pedicels. Marsh-rosemary. May-June.

17. P═ERIS D. Don, Edinb. New Phil. Journ. 17: 159. 1834.

[Port┘na Nutt. Trans. Am. Phil. Soc. II. 8: 268. 1843.]

Shrubs with evergreen serrulate leaves, and terminal or axillary, often panicled racemes of small white flowers, the pedicels subtended by small persistent bracts and 1-2-bracteolate.

Calyx 5-cleft, the lobes or sepals valvate. Corolla ovoid-urceolate, 5-toothed, the teeth little spreading. Stamens 10; filaments smooth, not appendaged; anthers oblong, the sacs dehiscent by a terminal pore and bearing a deflexed awn on the back. Ovary 5-celled; style slender; stigma not lobed. Capsule globose to ovoid. Seeds several or numerous with a cellular-reticulated coat. [Named from one of the Muses.]

About 6 species, 2 of eastern North America, 1 of western Cuba, the others Asiatic. Type species: Pieris form˛sa D. Don.

1 Andromeda Polif Lia L Wild Rosemary Marsh Holy R 1584

I. Pieris Florib˙nda (Pursh) Benth. & Hook. Mountain Fetter-Bush

Fig. 3242

Andromeda floribunda Pursh. Fl. Am. Sept. 293. 1814. Portuna floribunda Nutt. Trans. Am. Phil. Soc. (II) 8:

268. 1843. Pieris floribunda Benth. & Hook. Gen. Pl. 2: 588. 1876.

A shrub, 2°-6° high with nearly erect bristly or strigose-pubescent very leafy branches. Leaves oblong to ovate-lanceolate, coriaceous, persistent, evergreen, serrulate and bristly-ciliate, glabrous above, black-dotted beneath, acute or acuminate at the apex, usually rounded or obtuse at the base, 1 1/2' - 3' long, 1/2'-1' wide; petioles 2"-4" long, very bristly, at least when young; flowers white, in terminal clustered slender dense racemes, drooping, about 3 1/2" long; calyx-segments ovate-lanceolate, acute, valvate in the 5-angled bud; corolla slightly 5-angled, 5-saccate at the base; filaments unappen-daged; anther-sacs each I-awned; capsule globose-ovoid, about 2" high, longer than the slender style; seeds linear-oblong, the testa loose and cellular.

Mountains of Virginia to Georgia. May.