POLYGALACEyE. 221 



Plate 183, 184. 



POLYGALA, Tourn., L. 



Sepala inasqualia, 2 lateralibus (alis) petaloideis maximis. 

 Petala 3, in corollam postice fissam inferne coalita ; anticum 

 (carina) galeatnm, cristatnm. Stamina 8, rariusve 6, in pha- 

 langes 2 asquales antice pi. m. connatas corollas adnatas 

 coalita : antheras uniloculares, poro apicis dehiscentes. Cap- 

 sula compressa, membranacea, 2-locularis, 2-sperma, carun- 

 culata. 



PoLYGALA, Tourn. Inst. t. 79. Linn. Gen. 8.51. Juss. Gen. p. 99. DC. 



Prodr. 1. p. 321. St. Hil. & Moq.-Tand. in Mem. Mus. 17. 



p. 313. t. 27, 28. Deless. Ic. 3. t. 15- 18. End!. Gen. -5647. 

 CHAM.EBUXUS, Dillsn. Gen. t. 9. 



PsYCHANTHUs «fc Triclisperma, Raf. Speech. 1. p. 116, 117. 

 Milkivort. Siiakcroot. 



Calyx of five distinct and very unequal sepals, persistent, 

 or often (in P. paucifolia, &.c.) deciduous, quincuncially im- 

 bricated in aestivation ; the three exterior small and more or 

 less herbaceous, two of these (the first and third) approxi- 

 mate and anterior, and one (the second) posterior (next the 

 axis of inflorescence), larger, concave ; the two interior 

 (wings) lateral, much larger than the others and of a difter- 

 ent shape and texture, colored like the petals. Petals 5, 

 the two lateral minute, or usually (always ?) by their sup- 

 pression only 3, hypogynous, irregular, imbricated in aestiva- 

 tion, the two posterior exterior in the bud, connivent, below 

 coalescent by their anterior margins with the anterior petal, 

 thus forming a kind of gamopctalous corolla, which is open 

 on the upper side to the base ; the anterior petal (called the 

 keel) galeate above and inclosing the anthers and style in 

 its cavity, sometimes three-lobed, more or less crested on 

 the back. Stamens 8, or sometimes 6, monadelphous or 



