23. Pyrola. Acaulescent. Flowers in a raceme. Petals not widely spreading. Filaments awl-shaped. Style long. Valves of the capsule cobwebby on the edges.

Suborder IV. Monotropeæ. (Indian-pipe Family.) Flowers nearly as in Suborders 2 or 3, but the plants herbaceous, root-parasitic, entirely destitute of green foliage, and with the aspect of Beech-drops. Seeds as in Suborder 3.

[*] Corolla monopetalous; anthers 2-celled.

24. Pterospora. Corolla ovate, 5-toothed; anthers 2-awned on the back, opening lengthwise.

25. Schweinitzia. Corolla broadly bell-shaped, 5-lobed; anthers opening at the top.

[*][*] Corolla of 4 or 5 separate petals; calyx imperfect or bract-like.

26. Monotropa. Petals narrow. Anthers kidney-shaped, opening across the top.

1. GAYLUSSÁCIA, HBK. Huckleberry.

Corolla tubular, ovoid, or bell-shaped; the border 5-cleft. Stamens 10; anthers awnless; the cells tapering upward into more or less of a tube, opening by a chink at the end. Fruit a berry-like drupe, containing 10 seed-like nutlets.—Branching shrubs, with the aspect of Vaccinium, commonly sprinkled with resinous dots; the flowers (white tinged with purple or red) in lateral and bracted racemes. (Named for the distinguished chemist, Gay-Lussac.)

[*] Leaves thick and evergreen, somewhat serrate, not resinous-dotted.