240 
MERRILL. 
MALVACEAE. 
MALVASTRUM A. Gray. 
MALVASTRUM COROMANDELINUM (L.) Garcke in Bonplandia 5 
(1857) 297. 
Malvastrum tricuspidatum A. Gray PI. Wright. (1852) 16. 
Trimen “ states that Malva coromandelina L. is not, as Garcke supposed, 
Malvastrum, but is Sida acuta, basing this statement on an examination of 
Plukenet’s original specimens in the Herbarium of the British Museum. 
From an examination of Linnaeus’ description, it seems to be evident that 
two different species were included in his Malva coromandelina, and there 
is a chance for disagreement as to what constitutes the type of the species. 
The first reference, “Malva foliis ovato-oblongis acute serratis, capsulis 
tricuspidatis. Hort. cliff. 346. *Hort. ups. 201”, manifestly cannot apply 
to any species of Sida, and is undoubtedly the species named by many 
botanists Malvastrum tricuspidatum A. Gray. If the first reference be 
taken as the type of the species, then Garcke is correct, but if the second 
reference be taken as the type, and this is based on on a figure, Pluk. Mant. 
10, t. 334, /• 2, then Trimen would be correct; unfortunately, should the 
second reference be selected as the type of the species, this course would 
necessitate a new name for the very common and widely distributed Sida 
acuta Burm., which it antedates by fifteen years. I consider it best to 
retain the Linnean name for the Malvastrum. 
OENOTHERACEAE. 
JUSSIAEA L. 
JUSSIAEA LINIFOLIA Vahl Eclog. Amer. 2 (1798) 32; DC. Prodr. 3 
(1828) 55. 
Jussiaea acuminata Sw. FI. Ind. Occ. 2 (1800) 745; DC. 1. c. 54; Rolfe 
in Journ Bot. 23 (1885) 312; Vid. Phan. Cuming. Philip. (1885) 
115, Rev. PI. Vase. Filip. (1886) 140. 
Jussiaea blumeana Presl Epim. Bot. (1851) 217, non ? DC. 
Jussiaea costata Presl 1. c. 
This species is very common in the Philippines, extending from northern 
Luzon to southern Mindanao, a weed in rice-paddies, waste places, etc. It 
has undoubtedly been introduced from tropical America, but is now so 
abundant and widely distributed as to appear like an indigenous species. 
All the recently collected material has been distributed as Ludwigia 
prostrata Roxb., to which it has indeed a strong resemblance in superficial 
characters. It can readily be distinguished, however, by its 8 stamens and 
by its pods being cylindric, not prominently 4-angled, and the seeds scarcely 
or not at all visible through the walls. 
As to Jussiaea blumeana Presl, and J. costata Presl, I think there can 
be no doubt as to their identity not only with each other but also with 
J. linifolia Vahl {J. acuminata Sw.). Presl cites the same number of 
Cuming’s collection (665) under both, two specimens of which are in our 
herbarium; both sheets undoubtedly represent a single species, whatever 
FI. Ceyl. 1 (1893) 141. 
