Monographs Details: Eugenia undulata Aubl.
Authority: Maguire, Bassett. 1969. The botany of the Guayana Highland-part VIII. Mem. New York Bot. Gard. 18: 1-290.
Family:Myrtaceae
Scientific Name:Eugenia undulata Aubl.
Discussion:

The type-locality was in French Guiana ("ad ripam fluvii Sinemariensis triginta miUiaribus a maris httore," or according to the French text "trente lieues" from the mouth of the river). An Aublet specimen at B M , which I studied in 1965, seems without much question to represent the species shown in Aublet's figure: the leaves are similarly shaped and similarly crinkly at the margins; leaves at the upper 3 nodes are alternate about as shown in the plate, and the stout pedicels (actually 2-3 m m long) are relatively about the same length. The fruit, shown in the plate as ellipsoid and apparently lacking a calyx (only the scar of the terminal disk shown), is described by Aublet as "parvo, rubro, olivaeformi." I have not seen any other specimen combining these features, in addition to that of pubescent pedicels, with glabrous bracteoles and hypanthium.

Eugenia poiteaui Berg (Linnaea 27: 181. 1856) based on a fruiting specimen collected by Poiteau in French Guiana ("v. fructif. in hb. Kunth."), must be very similar if not actually conspecific. The type has presumably been destroyed, but a specimen at G (cf Field Mus. neg. 23579) may be an isotype. The large, shortpetiolate leaves are not unlike those of E. undulata except for their obtuse or shortacuminate (rather than long-acuminate) tips. The fruit is ellipsoid as in Aublet's plant, and the fruiting pedicels are 3-4 m m long. Berg described E. poiteaui as glabrous, the pedicels as "minutissime puberulis" (as in E. undulata). Amshoff (Rec. Trav. Bot. Neerl. 4 2 : 16. 1950) compared E. poiteaui with E. latifolia Aubl., noting that the sepals in E. poiteaui were "distinctly smaller."