33 
~ MONS. A. ROBERT’S MATTO GROSSO PLANTS.—I. 
Tue paper, of which the following pages form the first instal- 
ment, will comprise a list, together with meth om of novelties, of 
the more cea amng of the plants collected i in 1902-3 in Matto Grosso 
and Northern Paraguay by M. A. Robert. M. Robert’s expedition, 
which was generously supported by Mrs, Percy Sladen, widow of the 
late e i00logical Secretary of the Linnean Society, established 
its head- agherbare at Sant’ Anna da Chapada, situated on the plateau 
which rises a few miles east of Cuyaba. Here the greater number 
of the plants and the nearer i Setea collections now at the 
British Museum were obtained. In addition, M. Robert gathered 
plants at Cuyaba, Ciranteks “Posto Murtinho, a station on the Rio 
Paraguay between Corumba and the Rio Apa, and lastly at Terere 
in Northern Paraguay. 
Of recent years much attention has ori gi to the botany 
of Matto Grosso and Paraguay, work now being carried on, in con- 
nection with the former, chiefly by the "edeientta: monographs of 
wedish authors, with the latter by Professor Chodat and those 
8 are assisting in his Plante Hassleriane. In spite of this 
eye however, the collection before us yields a few novelties, 
and, as will be seen, is not without points of iutarosts in ses 0 of 
geographical distribution. It should be observed that, as most of 
the specimens are from Sant’ Anna da Chapada, phy looutities 
other than that are given. The names of very common species are 
omitted.—_S. M. 
ACANTHACES, 
By Spencer te M. Moors, B.Sc., F.L.S. 
Tremacanthus, Acanthacearum e tribu Ruelliearwm genus 
vum. Calyx alte 5-partitus, ee inter se equalibus. Corolle subi 
elongatus, superne amplificatus, limbus equaliter 5-fidus, lobis 
sestivatione contortis. Beamink 4, inclu usa, tubo per paria inserta, 
didynama, addito staminodio parvulo omnino ananthero ; anthers 
basi sagittatis. Pollinis grana circuitu subsphericalia, aliquanto 
compressa, faviformi-exsculpta (Wabenpollen), poris 3 indutis. 
Ovarium incomplete 2-loculare; stigmatis lobus alter abbreviatus, 
alter elongatus et lineari- lanceolatu us; ovula quove in loculo 
Capsula ovoidea, basi agate” a aes Say valvis septo parallelis 
aliquantulum compressis. Semina maxime compressa, orbicularia, 
fere omnino See ie os arupiiot vel parum ramoso 
Folia integerri Flores solitarii vel bini, ex axillis superioribus 
orti spicam scmetidantan, Bractea minuta. Bracteole 
Tre anthus Roberti, sp. unica. Caule erecto niet 
sessile f favtabasen: pubescente, foliis provipetiolstit oblongo-ovatis 
basi apiceque obtusis subcoriaceis supra scabridis subtus furfuraceo- 
pubescentibus, spicis plerumque folia excedentibus plurifloris, foliis 
JournaL or Borany.—Vou. 42. [Frsrvary, 1904.] D 
