12 The following is e key to some new genera, founded partly 



UTJon nev; discoveries and partly upon old soecies that I had either 

 not seen or of which I had only incomplete material when making 

 my previous key, and although 1 then believed them to belong to 

 new ffenera, I nreferred to wait until actual material was available 

 for examination before founding genera upon them, hence their 

 omAssion from the previous key. Numbers are added indicate their 

 previous key. l^umbers are added to indicate their approximate 

 position in the sequence adopted, and I have also indicated the 

 tyne species of each genus. Full descriptions will follow as each 

 genus is dealth v/ith in its sequence. 



KEY TO NE\Y GENERA. 



1, Annuals; leaves opposite, flat; flowers olitary; pedicels 



2-6 inches long; calyx unequally 5-lobed; petals free, 

 slender, passing into staminodes; capsule expanding 

 its valves when v,'etted; placentas on the floor of the 

 cells. " 2 



Perennials; leaves opposite, not flat; flowers solitary; 

 pedicels under 2 inches long or flowers sessile; cal3nc 

 5-6 lobed; petals free; capsule expanding or separating 

 its valves when wetted; placentas on the floor of the 

 outer wall of the cells. 3 



2, Leaves petiolate, with a lanceolate or ovate flat or con- 



cave blade, glabrous; stigmas 10, filiform; ovary infer- 

 ior, 10-celled; capsule with 10 valves and cells; ex- 

 panding-keels of the valves central, mor or less contig- 

 uous at the upper part and separated at the base or 

 subparallel through-out entirely adnate without free 

 tips or wings; cells without cell-wings or tubercles; 

 seeds globose, smooth. 



Species 2, A, Pillansii, N, E, Bp, the type of the genus, 

 and A, helianthoides, N, E. Br. (Mesembryanthemum 

 helianthoides. Ait.) 27b Apatesia. 



Leaves linear to narrowly oblanceolate, pubescent; stig- 

 mas 12-15; ovary nearly or ouite superior, 12-14 celled; 

 capsule with 12-14 valves and cells; expanding keels of 

 the valves arising quite at the margins of the valves 

 and inflexed so that their edges are nearly or quite 

 contiguous, and ending in free diverging awns; cells 

 narrow, roofed for half their length, without a tubercle 

 at the opening; seeds flattened, S-shaped, smooth. 



Species one, ^'^, Candollii, N. ^, Bp, (i«-esembryanthemvim 

 Candollii, Haw.) 27a ^^acrocaulon. 



3, Capsule small and thin, separating into 5 valves or parts 



with the cell-partitions adhering to the centre of each 

 part and separating from the central axis so that the 

 ellipsoid, smooth seeds are liberated; a very smell, 

 tufted plant; leaves semi terete or subtrigonous; stamens 

 about 25, in one series, erect; stigmas 5, subulate; 

 ovary partly superior, 5-celled; placenteas on the base 

 of the outer v/all of the cells. 



