62 TAXONOMY OF VASCULAR PLANTS [Bot. Absts., Vol. VI, 



443. Rtdberg, Per Axel. Rosales, Family 24. Fabaceae, Tribe 6. Psoraleae. North 

 Amer. Flora 24: 1-64. 1919. — The tribe Psoraleae, as given, contains 19 genera, and 16 of these 

 are covered in this part; the remainder will be discussed in a subsequent part. The genus 

 Eysenhardtia is treated by Francis W. Pennell. — H. M. Fitzpatrick. 



444. Schodde, Dorothy E. Polemoniaceae of Ohio. Ohio Jour. Sci. 20: 43-47. 1919. 

 — A key to the Polemoniaceae of Ohio is given and the following species are described: Phlox 

 maculata, P. paniculata, P. ovata, P. glaberrima, P. pilosa, P. divaricata, P. stolonifera, P. 

 subulata, Gilia rubra., P olemonium caerulium, P.reptans, Cobaea scandens. — H.D. Hooker, Jr. 



445. Schwantes, G. Mesembrianthemum Margaretae Schwantes spec. nov. Monats- 

 schr. fur Kakteenkunde 29: 55-57. 1 fig. 1919.— The species is formally described and notes 

 are added as to its relationship. It belongs to the section Cymbiformia and is allied to M. 

 deserticolum. The type was collected in German Southwest Africa by Margarethe Fried- 

 rich. — A. S. Hitchcock. 



446. Schwantes, G. Mesembrianthemum prismaticum Marloth und Mesembrianthemum 

 lapidiforme Mario th. Monatsschr. fur. Kakteenkunde 29: 42-45. 2 fig. 1919. — This includes 

 remarks and informal descriptions of the two species. — A. S. Hitchcock. 



447. Sedgwick, L. J. On Trichodesma indicum R. Br. and Trichodesma amplexicaule 

 Auctt. Rec. Bot. Surv. India 6: 347-350. PI. 11. 1919.— The two species are contrasted and 

 the differential characters clearly indicated. — E. D. Merrills. 



448. Sedgwick, L. J. A new Indian Impatiens. Rec. Bot. Surv. India 6: 351. 1919. — 

 Impatiens kleiniformis is described. — E. D. Merril. 



449. Sedgwick, L. J. A new Indian Habenaria. Rec. Bot. Surv. India 6: 352. 1919. 



— Habenaria {%Ate) multicaudata is described. — E. D. Merrill. 



450. Sedgwick, L. J. On Alysicarpus rugosus DC. and its allied species. Jour. Indian 

 Bot. 1: 14-18. 1919. — Various authors have treated the species of this genus of the Legumi- 

 nosae with deeply and closely transversely rugose joints of the loment as one or several species. 

 De Candolle gave two species; Wight and Arnott, three species; while Baker reduced them 

 all to a single variable type. Later floras have mostly followed Baker. The author is con- 

 vinced that at least four species exist, namely: A. styricifolius DC., A. Heyneamis Wt. & 

 Arn., A. rugosus DC., and A. ludens Wall, (probably sp.). This has been learned through field 

 work in western India, where these plants are very abundant. In this region there were two 

 types differing in at least six characters and they did not intergrade. If this was one species 

 the contrasting characters must be allelomorphs. The method of fertilization was not 

 observed, but is probably cross fertilization; two separate types are assumed, each with all 

 the contrasting characters but without a single heterozygote plant even in one class of char- 

 acters should be impossible. Even if self-fertilized the constancy of characters would con- 

 vince one that two species were concerned. Much of the difficulty with the taxonomy of Alysi- 

 carpus lies in the extreme plasticity of the species in their reactions toward environment. 

 Descriptions of the species are given, also list of specimens examined. The material is all 

 from western India collected by Father Blatter, Messrs. Hallberg and Bell, and the 

 author. The treatment is tentative awaiting more complete study, especially of the intricate 

 synonymy. — K. M. Wiegand. 



451. Small, James. The origin and development of the Compositae. New Phytol. 18: 

 129-176. Fig. 64-78. 1919— [See Bot. Absts. 5, Entry 720; also next following Entry, 452.] 



452. Small, James. The origin and development of the Compositae. New Phytol. 18: 

 201-234. Fig. 79. 1919. — "The results of the present investigation of the Compositae are 

 chiefly of two kinds; the phylesis of the family and of its chief groups has been elucidated, 

 and various theories have been given to account for the origin and development of the struc- 



