JUXE 1 TO SEPTEMBER 30, 1920. 53 



51086 to 51094— Continued. 



51088. Dahlia sp. 



"(No. 427.) Small double-flowered lilac. This variety flowers 

 later than the others." 



51089. Dahlia sp. 



"(No. 428.) Single white. This looks much like a form of Dalilia 

 maxonii. The preceding three varieties all have leaves and .stems 

 tinged with purplish, and leaves distinct in form from the present 

 number. In this variety and in No. 429 [S. P. I. No. 51090] the leaves 

 are light green, with the leaflets long pointed." 



51090. Dahlia sp. 



"(No. 429.) Double white, like the single white except that the 

 flowers are double." 

 51091 and 51092. Guilielma utilis Oerst. Phcenicacese. Palm. 



(Bactris utilis Bentli. and Hook.) 



51091. " (No. 424. July 6, 1920.) Plants of the seedless pejibayc. 

 I have already described the pejibaye in connection with a ship- 

 ment of seeds made under No. 391a [S. P. I. No. 50679]. The 

 suckers or offshoots sent under the present number, however, are 

 of a choice seedless form growing in the garden of Sr. Alfredo 

 Brade, in San Jose. Sr. Brade has generously presented us with 

 the only two ofCshoots at present available, in the hope that they 

 will grow in Florida. The seedless pejibaye is rare in Costa Rica, 

 and very highly esteemed, as it should be. Its propagation must 

 necessarily be slow, because of the very few offshoots which each 

 palm produces. The only question is, will the progeny of these 

 palms invariably retain the valuable characteristic of seedless- 

 ness? It seems possible that seedlessness may be due, in some 

 instances at least, to local peculiarities of climate which affect the 

 pollination of the flowers ; and in such instances, the characteristic 

 will not, of course, be heritable. The matter has not yet been suf- 

 ficiently investigated, however, to permit any conclusions to be 

 reached ; and for the pi'esent we should make an effort to test all 

 available seedless forms in our tropical dependencies and in south- 

 ern Florida." 



For previous introduction, see S. P. I. No. 44268. 



51092. "(No. 431. July 6, 1920.) Plants of seedless pejibaye, pre- 

 sented by Doiia Amparo de Zeledon, of San .Jose. See remarks con- 

 cerning seedless pejibayes under No. 424 [S. P. I. No. 51091]. The 

 offshoots forwarded under the present number hiive been obtained 

 for us by Sra de Zeledon from palms known by her to produce 

 seedless fruits. The value of her gift can be appreciated only by 

 those who know how difficult it is to procure offshoots of the seed- 

 less pejibaye." 



For previous introduction, see S. P. I. No. 44268. 



Fruits of this seedless form are shown in Plate VIII. 

 51093. Passiflora quadeangulaeis L. Passifloraceje. Giant granadilla. 

 "(No. 480. July 6, 1920.) Cuttings of granadilla real. From the gar- 

 den of Sr. Alfredo Brade, in San Jose. Sr. Brade states that this vine is 



