115 



pated by that of Micrampelis, which has already been restored by a 

 number of botanists. 



The genus Echinopepon was established in 1800 by Oh. Naudm, 1 who 

 based it upon three till then undescribed species, viz, E. millifiorus, 

 E. quinquelobatus, and E. liorridwt. In 1881 Professor Cogniaux, in his 

 Monograph of the Cucurbitaceae, made Echinopepon and Megarrhiza 

 sections of Eehinocystis. This view has been generally accepted. Dr. 

 Watson, however, in the Bulletin of the Torrey Botanical Club for 1887 3 

 contends that each deserves generic rank. A careful study in these 

 groups extending over several years leads me to believe that these 

 genera may be maintained on about the lines there laid down by Dr. 

 Watson. By the removal of several outlying species which have been 

 referred to Eehinocystis either on account of poor material or for want 

 of a better place, these genera can be more clearly defined. For the 

 species cut off there have recently been established by Professor Cogn- 

 iaux the new genera Vaseyanthus and Brandegea into which these 

 abnormal forms seem very easily to fit. 



A fourth section of Eehinocystis called Pseudo-echinopepon was 

 established by Professor Cogniaux in the Proceedings of the California 

 Academy of Sciences*, which also deserves generic rank, or rather 

 should be merged into his recent genus Vaseyanthus. A short time 

 before J)r. Watson established the section Heterosicyos in the genus 

 Sicyos for a plant belonging to this same group. The species appears 

 to me to belong to Brandegea rather than to Sicyos. 



As I understand the group therefore the following genera are to be 

 recognized : 



Echinopepon Naudin. Eehinocystis k Echinopepon Cogn. 



Maraii Kellogg. Megarrkiza Torr.; Eehinocystis i Mamh Cogn. 



Micrampelis Raf. Eehinocystis Torr. & (Jr. 



Vaseyanthus Cogn. Eehinocystis § Pseudoechinopepon Cogn. 



Brandegea Cogn. iSicyos § Heterosicyos Wats. 



ECHINOPEPON. 



I have examined specimens of the following species of Echinopepon 

 all of which, except one, are to be found in the National Herbarium. 

 I have seen additional material at the Gray Herbarium and have gone 

 over John Donuell Smith's private collection. 



Echinopepon cirrhopedunculatns Rose, Contr. Nat. Herb. 1 :100, pi. 4. 1891. 



Collected by Dr. Edward Palmer near Alamos, State of Sonora, September 16 to 

 30, 1890 (No. 634); also by Mr. C. G. Pringle at Tequila, State of Jalisco, October 3, 

 1893 (No. 4562). 



The former specimen is the type (No. 220) of this species. 

 Echinopepon confusus Rose, sp. nov. 



Stems slightly scabrous; leaves strongly 3dobed to scarcely lobed, thin, acute, 



1 Ann. Sei.Nat. ser.5,6:17. 



'Bull. Torr. Club, 14:158. 



3 Proc. Cal. Acad., ser, 2, 3 : 59. 1S90. 



