BAXIFRAGACE2E. 337 



marshlands of the South-west of Australia, with the habit of certain 

 Saxifrages. Its short rhizome, sunk vertically, or more or less 

 obliquely in the swampy soil, bears above ground the alternate, so-called 

 radical leaves, petiolate and exstipulate, approximated into a rosette. 

 Some of them are entire, flat, elliptical-oblong, without marked ribs ; 

 others are developed into pitchers or ascidia (fig. 378) ; in these the 

 petiole bears at its apex a suspended urn, with three longitudinal, 

 external prominences, one median and two lateral ; a thick collar 

 covered with vertical ribs surrounds the mouth of the urn, 1 closed by 

 a slightly convex lid. All the parts of this plant are covered with a 

 fine silky down. The flowers are borne on a common erect scape, 

 naked below, and bearing above a pretty large number of alternate, 

 usually biparous cymes, with bracts at their base, but no bractlets to 

 the floral pedicels. 



IV. PARNASSIA SERIES. 



Parncmicc (figs. 382—387) has regular hermaphrodite flowers. The 

 receptacle is slightly concave and saucer-shaped ; on its rim are 

 inserted the perianth and androceum. The calyx consists of five 

 sepals, one anterior, two lateral, and two posterior, of imbricate 

 pignoration. 3 The corolla consists of five imbricated marcescent 

 petals. 4 The five subperigynous stamens alternate with the petals ; 

 each consists of a free filament, and an introrse, versatile, two-celled 

 anther of longitudinal dehiscence. 5 Between the stamens are as 

 many multifid scales (fig. 3S5), with slender subulate lobes, each 

 tipped by a capitate gland. The g3'n0eceum is free; its one-celled 

 ovary is surmounted by a short style, which at once divides into 

 three, or more frequently four, stigmatiferous branches. To these 

 are superposed as many parietal placentas, 6 which bear either all 



1 Duchtre., jElSm. de Bot., figs. Ill, 112. 3 The imbrication is peculiar in P. palustris 



2 Parnassia T., Inst., 246, t. 127.— L., Gen., (fig. 384). Here it is quincuncial, but most 

 n . 384.— Adans., Fan. des PL, ii. 449.— J., commonly with sepals 1 and 4 posterior, and 

 Gen., 245.— Gjertn., Fruct., i. 2S7, t. 60.— sepals 2 and 3 lateral. 



Lamk., Bid., v. 22 ; Suppl., iv. 302 ; III., t. 216. 4 Sometimes fimbriate. 



—DC, Prodr.. i. 320.— Endl., Gen., n. 5039.— 5 The pollen grains are ovoidal, with three 



Payee, Organog., 183, t. 39 ; Fam. Nat., 101.— folds; in water they become spherical, with three 



A. Gray, Gen, III., t. 86.— B. H., Gen,, 639, papillate bands (H. Mohl, in Ann. Sc. Nat., ser. 



1004, n.'l9.— H. Bn., in Adansonia, vi. 7. — 2, iii. 329). 



Lem. & Dcke., Tr. Gen., 406. — Enneadgnamis 6 When there are four, two of the incomplete 



GESN.'(ex Adans.) — Pyrola Mor. (ex Adans., cells are lateral, two anteroposterior. 



nee alior.). 



vol. ii r. z 



