lá 
Ordo naturalis . . .. 
Arbuscula ramosa ; folia ovata, integerrima, brevè petiolata, cum ramis exstipulatis opposita. Flores minimi, dis- 
positi in racemos gracillimas, oppositos, axillares vel terminales, paniculatos. D 
Dedicavi hoc genus novum, cujus locus in ordine naturali mihi prorsüs ignotus, amico honoratissimo et æstuma- 
tissimo Johanni Stevensio Henslow, A.M. Societatis Linneanæ Socio, quondam Mineralogiæ, nunc Botanices in Uni- 
versitate Cantabrigiensi Professori, totius historiæ naturalis peritissimo, botanico et geologo acutissimo et indefesso. 
HENSLOWIA PUBESCENS. Tab. 221. 
Forus ovatis, acutis, subtüs ramis racemisque pubescentibus. 
In montibus insule Penang legit Georgius Porter. 
AnnuscULA. Ramr oppositi, patentes, basi subgemmaceo-bracteati, cylindrici, glabri, cinerei; superiores quadrangulares novellique 
pubescentes. Forra opposita, patentia, brevé petiolata, interstitiis duplò triplóve longiora, 3—4-pollicaria, subcoriacea, ovata, acuta, 
integerrima, basi acutiuscula, suprà lævia, nitida, subtòs mollia et pubescentia, costà mediocri, nervis gracilibus, suboppositis, obliquis, 
versus marginem arcuatis et anastomosantibus, venisque reticulatis. Perrout unguiculares, pubescentes, subtüs convexi, suprà plano- 
sulcati. SripuLz nulle. Frores valde parvi, magnitudine seminis sinapis, globosi, viridescentes, densè dispositi in racemos gracillimos, 
teretes, 4—5-pollicares, rectos, patentissimos, oppositos, subsessiles, pubescentes; horum quinque tresvå formant paniculam terminalem 
vel axillarem brachiato-patentissimam, pyramidatam, brevê pedunculatam. PepuNcuLr pube brevi, cinerascente molles; communis 
quadrangularis, crassitie pennæ columbinze, vix apice dilatatus, infra racemos unciam longus, interque eos semipollicaris vel pollicaris ; 
partiales unguem longi, basi bracteolis duabus lanceolatis, oppositis, deciduis, desinentes in rachin filiformem, angulosam. PEDICELLI 
patentissimi, capillacei, vix lineam longi, undique sparsi et approximati, uniflori, suffulti bracteo/d subulatâ, subæquante, acutá. CaLvx 
urceolatus, 5-fidus, extüs pubescens; /acimie lanceolatæ, valde acute. ^Comonra nulla. FILAMENTA 5 carnosa, glabra, brevissima, 
sinubus inter lacinias intüs inserta, hisce multà breviora, incurva. ÅNTHERÆ biloculares; loculi parvuli, longitudinales, distincti con- 
nectivo crasso, lato, subtruncato. PrsriLLUM calyce duplo longius. Ovarium globosum, sessile, nudum, pube capitellatå cand copioså 
obsitum, 2-loculare ; ovula numerosa, cuneiformia, placentæ centrali subventricosæ dens? inserta, transversalia. SryLus crassus, cylin- 
dricus, exsertus, ovarii diametrum vix æquans, puberulum. Sriama glabrum, convexum, carnosum, obsolete? bilobum. 
I am quite ignorant of the natural family to which this tree belongs. Mr. Brown has been so good as to point 
out to me the striking resemblance of the branches and leaves, especially the abrupt termination of the former, to the 
Oleine, particularly to Syringa; but beyond this all further relation between these plants seems to cease. I am 
acquainted with another species, a native of Penang, which resembles ours very closely, except in being smooth, and 
having the leaves a little more lengthened ; of this I will add the specific character below. Unfortunately I have not 
seen the fruit of either; but there are sufficient data in the inflorescence to establish these plants into a distinct 
new genus, which I feel great pride in having the honour of dedicating to my highly valued and esteemed friend 
Professor Henslow of Cambridge, a most excellent man, an ardent and distinguished botanist, and a very eminent 
geologist. For the drawing I am indebted to the kindness of Mr. Griffith. 
Henslowia glabra, foliis ovatis, valdé attenuatis, obtusis, utrinque lævibus, ramis racemisque glabris. 
In montibus Sillet detexit DeSilva. Floret Decembre. 
Plate CCXXI. Fig. 1. A portion of a raceme, highly magnified, as are also all the other parts. 2. Flower, the pistil being removed. 
3. Part of the calyx, with the stamens. 4. Pistil. 5. Ovary, opened. i 
ZALACCA EDULIS*. Tab. 222, 223, & 224. 
Zalacca edulis Reinwardt et Blume in Schult. Syst. Veg. vol. 7. part 2. p. 1334. 
Zalacca Rumph Herb. Amboin. vol. 5. p. 114. t. 57. fig. 2. 
Calamus Zalacca Roxb. Hort. Beng. p. 72. 
Crescit in Amboina (Rumphius), in Java (Reinwardt et Blume). Ipse observavi in sylvis secus ripas fluminum 
Martabaniæ Saluen et Attran, et ad Chappedong ore Tenasserim ; fructiferam mense Februarii. In Horto Botanico 
Caleuttæ mascula planta e Sumatra allata floret sub pluviis. is | 
Ås my generous friend Professor Von Martius has done me the favour to undertake the detailed description of my 
Palms, and of this species among the rest of that family, I have only to make a few observations on it in this place. 
* The name on the Plate should be altered to that here given, published in 1830 in the valuable work of my late much I i 
ted fi 
Lado, which I Mogi oan OG WAI A Á y late much lamented friend Professor Schultes of 
