COLLECTED BY MR. SPRUCE IN BRAZIL. 165 
extus canescentes. Petalorum lobus medius longe subulato-acumi- 
natus. Tubi staminei laciniæ steriles, breves, late, obtusissimæ, 
glanduliformes. Anthere intra sinus sessiles, extrorsæ, didymee. 
Ovarium mox tuberculoso-echinatum. Fructus non visus:—From 
the south bank of the Amazon, opposite Monte Alegre. 
2. Buettneria discolor, sp. n.; fruticosa, inermis, foliis ovali-ellipticis 
oblongisve supra glabris subtus tomento minuto albis, pedunculis 
brevissime umbellatis in glomerulos axillares confertis, petalorum 
lobo medio ungue multo breviore obtuso.—Frutex biorgyalis, ramo- 
sissimus, haud scandens, ramulis teretibus novellis petiolis venisque 
foliorum subtus ferrugineo-tomentellis. Folia majora 3-4 poll. 
longa, 2 poll. lata, breviter et obtuse acuminata, basi rotundata et 
trinervia, cæterum penninervia, transversim venulosa ; floralia 14-2- 
pollicaria, angusta. Flores ad axillas numerosissimi, parvi, pedunculis 
pedicellisve 1-2 lin. longis. Calyces extus tomentosi, laciniis latis 
haud acuminatis. Petala calyces vix superantia, linearia, apice 
leviter cucullata, lobis lateralibus dentiformibus reflexis, dorsali 
oblonga obtusa brevi. Zwbi staminei lobi brevissimi; antheræ 
subdidymæ. 
The Züiacee, besides the common Muntingia Calaburu, L., only 
comprise two forms of Triumfetta heterophylla, Lam. ; the one, gathered 
in May, is precisely similar to specimens from Jamaica and other West 
Indian Islands, and from Surinam; the latter of which (Hostmann, 
n. 499) are described by Miquel as new, under the name of 7. Host- 
manni, he having fancied he saw narrow linear petals in the very 
imperfect flowers of his specimen. I find, however, in several buds in _ 
very good condition which I have opened, no trace of petals, but ten — 
stamens, whose somewhat dilated filaments may have been either — 
mistaken for, or some of them accidentally converted into, petals. The 
second form, gathered in July, has almost the consistence of leaf and - 
the down of 7. Zappula, but no tendency to the peculiarly shaped lobes 
of the lower leaves of the latter species. ; ue 
A parasitical Guttiferous shrub from Santarem has been distributed | 
under the name of Arrudea ? bicolor, which I refer to that genus on 
account of the great multiplication of the floral envelopes, notwith- 
standing a considerable difference between the stamens of our plant 
and St. Hilaire’s original species. The flower, however, examined by 
Cambessèdes, was so far hermaphrodite, as to have a perfectly formed 
