128 



Hob. Arfak Mts., S.W. ridge running up to Angi lakes, in forest, 8000'. 

 Fl. Dec. 5525. 



Dioicum, epiphytum. Ramuli spiciferi 1 mm. crassi, collenchyma libriforme in 

 fascicules discretes dispositum, fasciculi intramedullare, 1-seriati, canalis lysigenus 

 unicus centralis. Limbi in sicco firmi fuscescentes et pellucido-punctulati, superi 

 usque ad 5 cm. longi et 2'5 cm. lati. Petioli usque ad 5 mm., pedunculi usque 

 ad 3 mm. longi. Spica matura 7 mm. longa, 4 mm. crassa, in sicco nigra. 



PlPEK PILOSULINODUM C. DC., sp. nOV. 



Ramulis tantum in nodis pilosulis, primum Isevibus postea lineatim lenticellatis ; 

 foliis parvis modice petiolatis, limbo ovato-acuminato basi obtuso apice obtusiuscule 

 et sat longe acuminate supra glabro subtus baud dense piloso, 5-nervio, petiolo 

 piloso basi ima vaginante ; pedunculo glabro quam petiolus breviore, spica florente 

 quam limbus paullo breviore, rhachi hirsuta, bractese glabrse, pelta rotunda, 

 staminibus 2, antheris tetragonis 4-valvatis. 



Hab. Arfak Mts.. slopes of Koebre ridge between Angi lakes, 8000'. FL 

 Dec. 5624. 



Dioicum, epiphytum. Ramuli spiciferi 1 mm. crassi, collenchyma libriforme 

 in fascicules discretes dispositum, fasciculi intramedullares 1-seriati, canalis lysi- 

 genus unicus centralis, in ramulis 2 mm. crassis lineatum lenticellatis cellulae 

 sclerosse circum collenchyma creberrimse. Limbi in sicco subcoriacei fuscescentes 

 et creberrime pellucido-punctulati usque ad 4'2 cm. longi et 2 cm. lati. Petioli 

 circiter 5 mm., pedunculi 3 mm. longi. Spicse florentes 3 cm. longse, 1 mm. 

 crassse, bracteae pelta 0'75 mm. diam. 



F AGACE^I. 



QUERCUS LAUTERBACHII Seemen in Engl. Bot. Jabrb. xxiii. Beitr. Ivii. 54 ; 

 Si:hum. & Laut. 264, t. iv. figs. A-E. 



Arfak Mts., S.W. ridge, 6000'. Fr. Dec. 6124. 



Distrib. New Guinea (D.S.W., Arfak Mts., 6000', A. E. Pratt ; (Herb. 

 Brit.)N.E.). 



A tall tree with slender stem. Pratt's collection consists of a single 

 acorn, very striking in size, 6'5 cm. long, with cupule 6 cm. by 5 cm. and 

 nut 4'5 cm. long and about the same in breadth, enclosed in the cupule for 

 I'D cm. from the base. I came across the same group of trees on the exact 

 spot kindly described to me by Mr. Pratt ; the ground was strewn with 

 acorns of all sizes, of which the one originally collected would represent the 

 largest. The leaves are larger than in Seemen's measurements, with the 

 veins pilose on the under surface, but they were collected from young 

 plants. 



URTICACEJE. 

 PIPTURUS PAPUANUS Gibbs, sp. nov. 



Arbuscula vel frutex : ramulis internodiis brevibus, cortice rugoso-lenticelloso ; 

 innovationes tomentosae. Folia parva, petiolata, lanceolata, sensim angustata, 

 acuminata, basi obtusa, integerrima, leviter revoluta, rigide membranacea, supra 



