536 PHANEROGAM I A. 



with which they accord in the long and curved radicle, they are dis- 

 tinguished by the ample cotyledons, and the membranaceous testa of 

 the seed (unless, indeed, Luma Temu and its immediate allies should 

 prove to have a hard seed-coat) : from Eugenia they are still more 

 widely distinguished by the number of the seeds (from 3 to 10 

 usually maturing), by the elongated radicle coiled partly or nearly 

 round the broad and thin cotyledons ; which, although rather fleshy 

 when plane, and strikingly folded and crumpled together in certain 

 species, are not at all united. The cotyledons when contortuplicate 

 much resemble those of Myrcia; but the ovules are indefinitely nume- 

 rous in each cell. For the genus, thus defined, I have adopted one of 

 the native names of a Myrtaceous tree [Myrtus Luma of Molina), 

 which in all probability belongs to this group, and which has the 

 merit of being both short and euphonious.* 



1. Luma Cheken. (Tab. 66.) 



L. foliis ovatis ovali-rotundis seu ovato-oblongis apiculato-acuminatis 

 subcoriaceis concoloribus subtus penninerviis glabris vel glabratis, 

 novellis margins costaque subtus cum ramulis pubescentibus ; pedun- 

 cid "is folium wquantibus vel superantibus uni—tri-(nunc quinque-)floris, 

 flore intermedia subsessili; bracteolis minutis caducissimis; calycis 

 lobis rotundatis petalisque 4 ; cotyledonibus planis. 



* Besides the species comprised in the present collection, or mentioned in the text, 

 the following, which I possess in flower only, probably belong to the genus : — 



Eugenia planipes, Hook. & Am. Bot. Misc. 3, p. 323, from Chilbe and Valdivia ; 

 which is allied to L. Ttmu. 



Myrtus multijlora, Juss., DC. Prodr. 3, p. 240; or, at least a plant from Gay's 

 Chilian collection wrongly named "Eugenia midtiflora, Hook.," which accords with 

 DeCandolle's character, and is pentamerous ! If it beloDg here it is the only penta- 

 merous species known to me. 



Eugenia leplospermoides, DC. Prodr. 3, p. 266 j or, at least Gay's plant referred by 

 Barneoud to that species ; which should have been compared with the originals, at hand 

 in two Parisian herbaria, instead of being guessed at. 



Eugenia Gayana, Barneoud, in Gay, Fl. Chil. 2, p. 390, a handsome, small-leaved 

 species. 



Also, Eugenia Bridgesii, Hook. & Am. Bot. Misc. 3, p. 322, which I do not possess, 

 evidently belongs to the Temu group. 



Eugenia Cumingii, E. ovata, and E. Selkirkii, and Myrtus? Fcrnandeziana, Hook. 

 & Arn. I.e. are unknown to me; as also are Myrtus Coquimbensis, and Eugenia mari- 

 tima of Barneoud, in Gay's Flora Chilena. 



