341 



ASCLEPIADACE^. 



Philibertia cumanensis (II. B. K.) Herasl. Biol. Cent.-Araer. ii. 318 (1881); Sar- 

 cotttt'wma ciiinanrnsis H. B. K. Nov. Gen. et Spec. iii. 195 (1818). Climbing over 

 plants iihout the lagooii. Mnnzanillo, December 1 to 31, 1890. Xo. 1002. 



Thn white iiowers ;iro said to be .sweet-scented. 

 Macroscepis sp. A high climb* r: leaves broadly oblong, 5 to G inches long, obtuse 

 or shortly acuminate, rounded at base, sessile, densely tonientose beneath, 

 nearly glabrous above: follicles 3 inches long, retlexed in fruit, tapering to the 

 apex, densely velvety-pubescent: seeds glabrous, except the long brownish 

 coma. In the mountains about Manzanillo, December 1 to 31, 1890. No. 1028. 



This i)lant is sai<l to climb to the top <if the tallest trees. If a Macroscepin it 

 is a new .<5pecies, but as it is only in fruit it is referred to as above. Bonrgean's 

 No. 1510, which seems to bo the same as Palmer's plant, is also referred to this 

 genus without name by Henisley in Biol. Cent.-Amer. ii. 321. 

 Asclepias curassavica I.. Sp. PI, i. 215 (17.53). Leaves very narrow. In low- 

 ground. Manzanillo, December 1 to 31, 1890. No. 1047. Armeria, February 15, 

 1S91. No. 1282. 



Dr. Palmer says this species is 

 sometimes cultivated in Mexico. 



Mrs. H. L. T. Wolcott has grown 

 some very attractive plants from 

 heed8entMayl,1892,which bloomed 

 November 1. The contrjist between 

 the briglit orange stamens and the 

 dark corolla is very pleasing. 



An iiit<'resting note regarding the 

 culture of this species occurs in the 

 Gardener's Chronicle (April 15,1893). 

 It is there spoken of as a very at- 

 tractive ]>lant and worthy of a place 

 in our gardens. 

 Asclepias glaucesceua II. 15. K. Nov. 

 Gen. et Kpec. iii. 190, t. 227 (1818). 

 Leaves 5 to 6 inches long, acute. 

 Colima, January 9 to Fel)ruary 0, 

 1891. No. 11.50. 



A com])arison of these specimens 

 with those referred to A. f/laucesccnti 

 from the United States shows that the latter belong to a different though closely 

 allied species. 



J. {flaiicrnceiin was described and iigured by II, B. K. in Nov. (Jen. et Spec, iii., p. 

 190, ti. 227, from plants collected between Acapulco and La Verta dt; la Moxonera. 

 The following note is from the Bot. Gaz. xvii. 193. 



Dr. Gray in Syn. FL, ii. 02. refers iheJ. siiUivaiiiii Torrey, Bot. Mex. Bound, 

 p. 162, to this species. The United States species, however, is clearly distinct from 

 A.glancit^ceiis, and should be referred to A. elata Benth. Dr. Gray, indeed, in 

 the Syn. Flora, Supjtl. p. 407, considers the two to be the same species; but in the 

 light of this new material I am convinced we have two good species, although 

 closely related. 



A. elata Benth. has oblong or oval leaves, rounded at the apex, very similar to 

 those of .1. olifiixifoJUi. 



A. (jlaKceaccus has nnich longer and narrower leaves, oblong to linear-oblong 

 and acute : the tlowers are much larger in A. elata, and the Iniods are spreading, 

 exposing the gynostogium; in A. fflauccHcenH the hoods are longer instead of 

 shorter than th<^ gynostegium, and erect and connivent. There is also a good 



Fig. 8.— a, Hood from Asclepias rilaiirescens; h, the 

 s!iint", sliowinj: tlic horn ; e, hood from A. elata; d, 

 the same, showing the horn. All enlarged lour 

 times. 



