CONTRIBUTIONS TO WESTERN BOTANY NO. IS 61 



' m 



ently perfect, but in some trees the anthers seem aborted at least in part- 

 Stigma nearly §essile. The flowers of edulis are much greener and more 

 numerous, and are arranged in a uniform panicle, while those of armata 

 are in an interrupted panicle, like a string of clusters of grapes. 



Erythea Brandegei. In Zoe 5 189 Brandegee says of Erythca Bran- 

 degei that it "grows abundantly in the mountains of the Cape region." 

 In this I think he is in error, having confused Washingtqnia Sonorae 

 with it. ^ There is nothing to distinguish this species from Wasluntonia 

 but the inflorescence, and Washingtonia sometimes has smooth and leafles 

 trunks growing below, and occasionally even close to the growing leaves, 

 and in the mountains the trunks are slender and would wave in the wind. 

 I studied the palms in the Laguna mountains up to 3,500 feet altitude 

 and saw no Er}^heas, though Sonorae was common in tlie canons and on 

 the slopes among the live oaks, and had the pink wood chanicteristic of 

 Sonorae. These plants were in flower and had the con^Icuous white 

 sheaths and inflorescence of Sonorae. Also on the way to La Pdz from 



common 



seem to be Sonorae. I saw but one little Er}1:hea near there. Purpus in 

 his^ description speaks of the flowers being 2^ mm. long Tind solitarv, 



armata 



which are nearly 1 cm, long. 



4 

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■ M 

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Eriogonum deserticola Watson P.A.A. 26 125. . This plant, de^^cribed 

 as a possible annual, is a shrub 3-6 feet high, witli much the habit of 

 the taller specimens of microthecum. It is hoary when young, and the 

 densely woolly leaves are rather thick and rounded-oblong. The panicle 



open and 



Ammobroma. the other beine Coldenia, 



It IS one 



On the way up to the palms in December, 1928, I saw a few bushes 

 of Condalia lycoides the hosts of the same Phoradendron as grows on 

 Prosopis and Acacia. 



J J 



On the sand dunes west of Yuma we hunted for Ammobroma and- 

 found many of the dead stems, and traced them down to the coraiectiou 

 with their hosts. The plant seems to be only partially parasitic on 

 Eriogonum deserticola and Coldenia. The stems die down completely to 

 thq host after blooming. How the tiny seeds get to the host 3-4 feet away 

 after germination, and how they can produce such stems is a wonder. 



Eriogonum exaltatum n. sp. Vergin bridge below BunkerviTle, Nevada 



sand alone the roadside. Plants erect 2-3 It liigh, an- 



growing in loose 



nual. Leav£»«i ra 



round 



white- woolly, 1-3 inches vdde, on rather stout and wingless petioles as 

 long or a little longer than the blades, all basal and clustered. Stems 

 several to many from the crown, green and glaucous, forking repeatedly 

 and terminating in long compound raceme whose final rays are 2-3 

 inches long and with about six involucres on the upper side, spaced half 

 an inch apart and erect, on pedicels shorter than the body which is 



