127 



Sepalum dorsale erectum, triangulum, obtusiusculura, convexum, c. 0'06 cm. longura 

 et latuin. Sepala lateralia oblique ovato-triangula, apice interdum plus ininusve 

 contracta, anguste obtusa, c. 0-075 cm. longa, 0'07-0'075 cm. lata. Petala diver- 

 gentia, anguste oblique triangula, subfalcatula, acuta, convexa, 1-nervia, c. 0'07 cm. 

 longa. Labellum simplex, decurvuin cum ovario angulum obtusum faciens, medio 

 fere obtusangule incurvurn, subsigmoideum, manifeste concavum, 1-nervium, basi 

 medio tantum affixum, callis 2 longitudinalibus parallelis approximatis oblongis in f 

 partibus inferioribus labelli, explanatum ovato-oblongum, anguste obtusum, c. Ol cm. 

 longum, fere 0'05 cm. latum. Gynostemium cum anthera 0. O'OG cm. longum, 

 clinandrio cum dorso gynostemii angulum rectum faciente, concavo. Anthera 

 cucullata, ovato-triangula, basi leviter emarginata, apice anguste truncata, c. 0'04 cm. 

 longa. Pollinia 8, clavato-pyriformia. Bostellum productum. Stigma trans- 

 versum. Ovarium obconicum, cum pedicello angulum obtusum faciens, c. O'OG cm. 

 longum ; pedicellus crassus, tortus, c. 0'06 cm. longus. 



Hob. Arfak Mts., ridge running up to Angi lakes, epiphytic in forest, 

 8000'. Dec. 5993. 



From the other species this one is readily distinguished by its moderately 

 dense and broad leaves and dense spikes. 

 The flowers are said to be yellow. 



Var. MAJOR J. J. S., var. nov. 



Gaules elongati, inferne defoliati cum radicibus adpressis, ad c. 21 cm. longi. 

 Folia 2-4-3 cm. longa, 0-37-0-475 cm. lata. Pedunculus c. 2*25-25 cm. longus ; 

 rhachis 4-5 cm. longa. Flores majores. Sepalum dorsale c. O'l cm. longum, 

 0-075 cm. latum, lateralia 0'12 cm. longa, 0'8 cm. lata. 



Hob. Arfak Mts., Angi lakes, mossy slopes by ? lake, 7000-8000'. 

 Fl. Dec. 5536. 



This differs from the type-specimen only by its longer stems and larger, 

 differently coloured flowers. 



The flowers are white. 



In the dried specimens the flowers of the type as well as those of the 

 variety are greenish with a large white anther. 



DICOTYLEDONE.E. 



P I P B R A C E M. (0. DB CANDOLLE.) 



PIPER ARFAKIANUM C. DC., sp. nov. 



Kamulis glabris, junioribus in nodis hirtellis; foliis modice petiolatis glabris, 

 lirnbo ovato-acmninato basi ima sequilatera acuto apice longe et acute acuminate, 

 5-nervio, petiolo basi ima vaginante ; pedunculo glabro quam petiolus breviore, 

 spica quam limbus pluries breviore cylindrica et apice obtusa, rhachi pilosa, 

 bractese glabrae, pelta transverse elliptica centre late et brevissime pedicelkta, 

 ovario inferne rhachi at baud profunde iinmerso superue libero ovato et glabro, 

 stigmatibus rotundato-ovatis. 



