38 11. POLYGALACES. 
E. B. 869. D. longifolia R. iii. 24., Koch. Fries—Much larger 
and taller than the last. A variety, D. obovata (M. and K.), is 
common in Scotland with broader leaves and the styles often, 
though not always, emarginate—In bogs, rather rare, common 
im Tyeland. P. VII. VIII. 
2. Parnassia Linn. 
1. P. palustris (L.); filaments of the petaloid scales 9-13, 
pet. with a short claw, radical 1. cordate stalked, stem-1. amplexi- 
caule.—E. B. 82.—Pet. white, veined. Glands of the scales 
yellow. L. mostly radical—Wet and boggy places, particularly 
in the north. P. VIII.—X. 
Order XI. POLYGALACEA. 
Sep. 5, imbricate, irregular, 2 interior much larger petaloid. 
Pet. unequal, usually 3, 1 anterior and larger than the rest. 
Stam. monadelphous, separating above into 2 equal opposite 
bundles. Anth. 1-celled, opening by a pore at their apex. Caps. 
1—2-celled, with placentas in the axis. Seeds pendulous, usually 
with an arillus at the base. 
1. Potycaua. Sep. 5, persistent, 2 inner (wings) broader 
and often petaloid. Cor. irregular. Pet. 3—5, connected 
together, the lower one keelshaped. Caps. compressed. 
Seeds solitary, with a 3-pointed basal arillus. 
1. Potyeaua Linn. Milkwort. 
1. P. vulgaris (L.); lower 1. smaller oblong, upper 1. lmear- 
lanceolate, fl. crested, wings of the cal. obovate mucronate, the 
lateral nerves branched and anastomosing with an oblique branch 
of the central nerve, caps. orbicular-oblong-obcordate sessile, 
lateral bracts shorter than the pedicels—H#. B. 76.—All the 
nerves of the wings branched (the middle one least) and ana- 
stomosing, the lateral ones not reaching to the extremity of the 
wing but joining a branch of the central one, never (I believe) 
the central one itself. FI. blue, pink or white. —8. P. depressa 
(Wend.); lower 1. mostly opposite and crowded on the lower part 
of the prostrate wiry stems.—y. P. oxyptera (R.); fl. smaller, fr. 
broader than the calyx-wings. FE. B. S. 2827.—A plant from 
Ben Bulben, Shgo, which is probably distinct, has the lower 
leaves oblong and rather small, upper lanceolate and large, wings 
of the cal. elliptical apiculate, their lateral nerves rejoining the 
central nerve near the apex and with numerous anastomosing 
branches externally, central nerve usually quite simple. L. much 
larger and fl. deep blue-—Dry pastures and peaty fens. P. VI. 
—IXx. 
