OF THE MATTO GROSSO EXPEDITION, 1891-92. 305 
longe acuminatis, ab hac vero ob spinarum absentiam, foliorum indumentum, pedicellos 
l-braeteatos dispar, et, alias inter notas, sepalis omnino diversis facile dignoscenda. 
The species has been named after Mr. J. C. Walker, a gentleman interested in botany, 
whose acquaintance I made at Cuyabá, and who very kindly accompanied and helped me 
while collecting near the city. [Bras. Or.] 
ANONA ($ ATTE; PILEFLORA) SANCTA-CRUCIS (sp. nov.) ; caule erecto, ramoso, ramulis 
teretibus, rufo-pubescentibus, dein fere glabris, pallide bruneis, abunde neenon grosse 
lenticelliferis, in longitudinem crebre rimosis; foliis brevipetiolatis, oblongis vel 
obovato-oblongis, obtusissimis, basi coarctatis, supra fere glabris, subtus, prsesertim 
in nervo medio, minute rufo-pubescentibus, coriaceo-membranaceis, erebre ac 
minute punctatis; pedunculis quam petioli longioribus, crassis, juxta basin 
l-bracteatis, sericeo-velutinis; bracteis late ovatis, crini brevissimo coronatis; sepalis 
deltoideo-ovatis, obtusiusculis, arcte velutinis; petalis exterioribus ovato-rotundatis, 
obtusis, arcte rufulo-velutinis ; gyneecio subgloboso, tomentoso ; fructu subgloboso, 
superne paullo coarctato, sparsim ac brevissime tuberculato. 
Hab. In nemorosis ad Santa Cruz (Barra dos Bugres), ubi floret mens. Nov. et mens. 
insequente fructum preebet. Nom. vernac. Ata. (N. 585.) 
Arbor parva, circa 6 met. alt., erecta, ramos crebros patulos elongatos gerens. Folia ad 
15°5 cm. long. (pleraque vero circa 12:0 cm.), medio 4'7-6'5 cm. lat., margine 
levissime undulata, utrinque pulchre reticulato-nervosa; nervus medius supra 
impressus, subtus valde eminens; petiolus crassus, puberulus, saltem in sieco arcte 
transversim rimatus, 0°7 em. long., 0:2 em. crass., late canaliculatus. Pedunculus 
vix 1:5 em. long. (sub fructu vero 3:5 cm.), medio 0:25 cm. crass. (sub flore ipso vix 
0*4 cm., et sub fructu prorsus 0'4 em.). Bracteze 0*4 em. long., 0:3 cm. lat., firme, 
velutinse, margine ciliolatee, crebre punctate. Flores virides, forsan circa 2:5 cm. 
diam. Sepala 0:5 em. long., 0:6 cm. lat., firma, arcte albo-ciliata, punctata. Petala 
(vix matura) circa 1:5 em. long., et medio 1:6 cm. lat., carnosa, utrinque velutina ; 
petala interiora nobis non obvia. Gyn:ecium floris vix maturi circa 1:5 em. diam. 
Fructus (edulis et ab incolis magni laudatus) fere maturus magnitudine eam 
Citri aurantii zequans, 6'0 em. long., medio 6:0 em. lat. (sub apice modo 3:0 em.), 
viridis, tuberculis nec ultra 0-1 em. e superficie minute scrobiculatá eminentibus 
(nonnunquam vero evanidis) sparsim obtectus. Semina 1:3-1:4 cm. long., medio 
0:9 em. lat., ad hilum 0°5 em. lat.; testa crustacea, lutescenti-brunea, nitens; 
albumen normale. z 
Speciebus ab omnibus e subsectione Oblongifloræ distat imprimis petalis ovato- 
rotundatis. Inter reliquas forte juxta 4. echinatam, Dun., intercalanda, sed multis 
de signis ab illa abhorret. [Guiana.] 
XYLOPIA GRANDIFLORA, A. St.-Hil. Fl. Bras. Merid. i. p. 40. 
Hab. Ad Serra da Chapada mens. Aug. fructificat. (N. 202.) [Bras Or, 
Amazonia. | d s 
SECOND SERIES.— BOTANY, VOL. IV. 2s 
