APPENDIX. 57 



gins of which often extend upward for some short distance along 

 the tube and form conspicuous hollow cups that secrete a necta- 

 riferous juice, a corresponding furrow being often seen externally 

 at the bottom of the tube opposite these glands ; the hairy fila- 

 ments spring at an angle from and are in fact an extension of 

 the front margin of these cups^ which, with the dense clothing 

 of long cottony hairs generally seen about the base of the tube, 

 form altogether a kind of fornix or annulus around the ovarium : 

 the anthers are seen in a somewhat connivcnt group surrounding 

 the stigma. These are precisely the distinguishing features that 

 characterize Witheringia, but described in other words by M. 

 Dunal in p. 402 : this structure is indistinctly shown in L^Heri- 



The 



other features of M. DunaPs diagnosis, as respects the form of 

 the calyx, corolla, pistillum and fruit, will be found to agree 



' r^ the species of which corre- 

 typical plant. It would have 

 been better for the sake of convenience to have retained the ge- 

 nus Saracha, now so long established, for the group of plants just 

 enumerated : this was maintained as long as a doubt hung over 



2rure 



with 



the real nature of L'Heritier^s plant; but now that this doubt is 

 removed, we have no alternative but to follow the course de- 

 manded by the rules of science. 



Having thus removed from Saracha all its species, except 

 S. punctata, R. & P., which in reality is the original type of this 

 genus as instituted and figured in the Prodromus of the genera 

 of the ^ Flora Peruviana' (p. 31. tab- 34), and which I formerly 

 separated from it in order to form the basis of a ncw^ genus 

 [Pcecilochroma) (Lond. Journ. Bot, vii, 353), we are now com- 

 pelled to retrace our steps, and re-establish Saracha for that 

 group of plants, so that the name of Poecilochroma must conse- 

 quently be suppressed : the several species enumerated will now 

 stand as follows : 



1 . Saracha punctata, R. ^ P., instead of Poecilochroma punctatum,no6. (/. c.) 



2. frondosa, nob. = frondosum, noh. 



3, guttata, noK = guttatum, nob, 



4 maculata, nob. — maculatum, nob. „ 



si . Lohbiana, nob. = Lobbianum, nob, „ 



6. Lindeniana, nob. = Lindemanum, nob. 



7 Quitoensis, nob. = Quitoense, nob. 



" Boissieri, nob. = Boissieri, Dun. = Lyciople- 



9f 

 P9 



8. 



sium Boissieri, Dun. 



9 Funkiana, nob. = Funkianum, Dun. 



lb. Sellomana, nob. = Witheriugia Sellovviana, SetidtTi. 



Considering for the reasons before stated, that among the 

 several individuals included by M. Dunal in Witheringia, the 

 typical species only belongs really to that genus, it becomes ne- 



