﻿APRIL 1 TO JUNE 30, 1917. 91 



44914 to 44921— Continued. 



and yellow fruits are used for pickles and conserves. (Adapted from 

 Bailey, Standard Cyclopedia of Horticulture, vol. J h p. 1931.) 



44920. Psidium sp. Myrtacese. 



"A wild guava which tastes like a strawberry." (Purpus.) 



44921. Vitis sp. Vitaceae. 



" Callulos." " Several species of Vitis are found in the Mexican low- 

 lands. The commonest of these is Vitis tiliaefolia. Another belongs 

 apparently to the Muscadine group and produces fruits much like those 

 of the James, although usually smaller. These tropical grapes should 

 be brought together in some suitable region, such as extreme southern 

 Florida, and there developed by a competent plant breeder. We do not 

 have as yet a first-class table grape suited to strictly tropical regions. 

 With the excellent material available for breeding, it should be com- 

 paratively simple to produce one." (Popenoe.) 



44922 to 44924. Acacia spp. Mimosacese. 



From the vicinity of Khartum, Sudan, Africa. Presented by Mr. F. G. 

 Walsingham, Gizeh Branch, Ministry of Agriculture, Cairo, Egypt. Re- 

 ceived June 28, 1917. 



44922. Acacia albida Delile. 



A large, much-branched tree, with whitish bark and stipular spines 

 usually from one-half to three-quarters of an inch in length. The 

 compound leaves are composed of four to six pairs of pinnae, and the 

 white flowers occur in axillary spikes up to 5 inches long. The flat, 

 oblong pods are 2 to 4 inches long. The tree is a native of tropical and 

 northern Africa and yields a gum similar to gum arabic. The leaves 

 are eaten by goats, and the bark is used in curing leather. (Adapted 

 from Oliver, Flora of Tropical Africa, vol. 2, p. 339, and from Kew 

 Bulletin of Miscellaneous Information, Additional Series IX, pt. 2, p. 288.) 



44923. Acacia seyal Delile. 



A small or medium-sized tree with brown or reddish brown bark, 

 slender, recurved, ivory-white spines 1 to 2 inches long, and bipinnate 

 leaves with three to nine pairs of pinnae. The very fragrant flowers 

 are in heads, and the leathery, sickle-shaped pods are from 3 to 6 inches 

 long. The tree is common in tropical Africa north of the Equator and 

 is one of the principal gum-yielding acacias in the Nile region. This 

 gum, which flows freely from all wounds, is of a bright amber color, 

 becoming white and brittle when thoroughly dry. It has a relatively 

 high viscosity and strong adhesive power. (Adapted from Oliver, Flora of 

 Tropical Africa, vol. 2, p. 351, and from Kew Bulletin of Miscellaneous 

 Information, Additional Series IX, pt. 2, p. 295.) 



44924. Acacia vekugeka Schweinf. 



A tall tree, up to 60 feet in height, with gray or greenish gray bark, 

 and long, slender, straight, spreading spines. The bipinnate leaves are 

 composed of seven to eight pairs of pinna?, and the heads of flowers are 

 in axillary fascicles of four to eight. (Adapted from Oliver, Flora of 

 Tropical Africa, vol. 2, p. 35).) 



