Floristik etc. — Angewandte Botanik. 553 



Urb. von Cuba, Cr. teniiiramis Urb. von Cuba, Cr. micradenus Urb. 

 von Cuba, Cr. sabanensis Urb. von Cuba, Rhatnnidium dictyophylhmi 

 Urb. von Jamaica, Pavonia troyana Urb. (= P. raceniosa Sw. var. 

 troyana Urb.) von Jamaica. W. Herter. 



UFban, 1.. Sertum antillanum. II. (Rep. spec. nov. XIII. p. 465— 

 484. 1915.) 



Enthält folgende Neuheiten der Antillen: Waltheria ovalifolia 

 Urb. von Cuba, Ternstroemia Nashii Urb. von Haiti, Lagetta paiici- 

 flora Urb. von Cuba, Eugenia androsiana Urb. von der Bahama- 

 Insel Andros, Ossaea lomensis Urb. von Sto. Domingo, Jacquinia 

 robusta Urb. von Cuba, Wallenia laurifolia Sw. var. Raunkiaeri Urb. 

 von Sto. Domingo, W. sylvestris Urb. von Jamaica, Chrysophyllum 

 montanum Urb. von Sto. Domingo, Chr. platyphyllum Urb. (=:= Chr. 

 oliviforme L. var. platyphyllum Urb.) von Haiti, Chr. pallescens Urb. 

 (^ Chr. oliviforme L. var. pallescens Urb.) von Haiti, Bumelia claren- 

 donensis Urb. von Jamaica, B. excisa Urb. von Jamaica, Tabernae- 

 tnontana attenuata (Miers) Urb. von Trinidad und Guiana, T. calcicola 

 Urb. von Jamaica, Rochefortia spinosa (Jacq.) Urb. von Colombia, 

 Heliotropium. myriophyllum Urb. von Cuba, H. brevicaule Urb. von 

 der Bahama-Insel Inagua, Salvia asuensis Urb. von Sto. Domingo, 

 5. selleana Urb. von Haiti, Gesneria gibberosa Urb. von Cuba, Port- 

 landia microsepala Urb. von Jamaica, Coccocypselum tenue Urb. von 

 Jamaica, Antirrhoea Shaferi Urb. von Cuba, Mikania Buchii Urb. 

 von Haiti, Gnaphalium jamaicence Urb. von Jamaica, Gn. rosillense 

 Urb. von Sto. Domingo, Gn. antillanum Urb. von Saba und Cuba, 

 Selleophytum (gen. nov. Compositarum.) Buchii Urb. von Haiti. 



W. Herter. 



Collins, G. N., Pueblo Indian Maize breeding. (Journ. of 

 Heredity. V. p. 255—268. 1914.) 



American agriculture is under Obligation to the American Indian 

 for having developed the maize plant to a high State of efficiency 

 and for having adapted it to a wide ränge of environment. The 

 importance of the unconscious pioneer agricultural work of the 

 Indian has not been adequately appreciated. Many of the agricultural 

 requirements of maize laboriously ascertained by experiment might 

 have been learned from a study of the agricultural practices of the 

 Indian. So Frank H. Cushing about 1884 made an intensive 

 study of the maize-breeding-methods among the Zuni-Indians. 



The agricultural Indians of the Southwest have continued, from 

 prehistoric times, to grow maize successfuUy in regions where 

 drought, and especially the absence of spring rains, make the 

 growing of the common varieties impossible. A study of the varieties 

 grown by the Hopi, Navajo, Zuni and other agricultural Indians 

 shows that these varieties possess two special adaptations: 1. A 

 greatly elongated mesocotyl that permits deep planting and 2. the 

 development of a Single large radicle that rapidly descends to the 

 moist subsoil and supplies water during the critical seedling stage. 

 Comparative test plantings of the Navajo dry-land maize, and Chinese 

 and Boone County White, were made in a box at different depths, 

 varying from 4 to 32 cm. ander surface of ground. The Navajo 

 surpassed its competitors in growth at all depths; but from the 

 lower levels it was the only one to emerge, due to its extraordinary 

 adaptation for such growth, through the elongation of its mesocotyl. 



