1897.] D. Prain — Some additional Leguminosse. 459 



6. Derrts vestita Bale. 



7. Derris elegans Benth. 



The large suites of Malayan specimens collected by Kunstler, large suites from 

 the Andamans sent by Man, and large suites of Tenasserim specimens collected by 

 Falconer and more recently by Proudlock, make it necessary to treat D. vestita as 

 only a form of D. elegans. 



Both D. vestita and D. elegans are reported in every case as having ' white ' 

 flowers. Father Scortechini was of opinion that his specimens must belong to a 

 distinct species since, though they otherwise agreed with the F. B. I. description of 

 D. vestita, they had differently coloured flowers. 



The typical form of the species occurs in Perak and in Sumatra as well as in 

 Martaban and Tenasserim. An unnamed sheet of Dr. Wallich's, (Wall. Cat. 7540) 

 from Moulmein, belongs to the species. The form named D. vestita by Mr. Baker 

 occurs in Perak as well as in Malacca and has been collected in Tenasserim, at 

 Moulmein, both by Dr. Falconer and by Mr. Kurz. 



10. Derris cuneifolia Benth. 

 This extends to Chittagong and Burma ; the form, however, which occurs in 

 Malaya, though united to the type by Mr. Baker, was distinguished by Mr. Bentham 

 as a variety " malaccensis." Since Mr. Baker's account of the genus appeared, large 

 suites, including many specimens with ripe fruit, have been sent from Perak ; these 

 show that it is better to separate the Malayan plant as a species. Incidentally too 

 these suites of specimens seem to indicate that Derris discolor Bth. is only D. cunei- 

 folia with ripe fruit ; the writer has not, however, yet seen this directly demonstra- 

 ted by suites of specimens from Sikkim or Silhet, where Derris discolor was found. 

 Amerimnum obovatum Ham. which is the basis of Pongamia obovata Grah., as repre- 

 sented in Herb. Calcutta, belongs to this species. 



106. Derris malaccensis Prain, Journ. As. Soc. Beng. lxvi. 2. 107 ; 

 leaflets 5-7, rather large, elliptic, abruptly long-acuminate, subcoria- 

 ceous, racemes shorter than the leaves, standard glabrous, pod winged 

 or wingless when ripe. Deguelia malaccensis Prain MSS. 



Var. typica ; pod distinctly winged, (as in a true Derris) along one 

 or both sutures. Derris cuneifolia Bth. var. malaccensis Bth. Journ. 

 Linn. Soc. iv. Suppl. 112. 



Tenasserim; Moulmein, Falconer ! Perak; Scortechini 110 \ Kuns- 

 tler 4028 ! 4149 ! 4504 ! 8551 ! Penang ; Curtis 2735 ! Malacca ; Griffith ! 

 Singapore ; Ridley ! Distrib. Borneo. 



Var. ? aptera ; pod quite wingless when ripe (as in Pongamia). 



Malacca ; Maingay, 613 ! Perak ; Kunstler, 4518 ! 6428 ! There are 

 also specimens from Perak (Kunstler 3190 ! Wray 2025 !) almost exactly 

 intermediate, as to fruit, between typical D. malaccensis and the variety 

 aptera. 



Var. ? millettiodes ; pod as in var. ? aptera, but dehiscing when ripe 

 (as in Millettia). Perak ; Kunstler 10696 ! 



A climber 40-60 feet long, leaflets in all respects like those of D. cuneifolia 

 except in their larger size and their long caudate-acuminate tips. Flowers as in D. 

 J. II. 58 



