COLLECTED IN DUTCH NEW GUINEA. 115 



than on the lower side ; reticulum moderately close ; petioles stout, deeply channelled 

 above, microscopically pulierulous, 3-5 mm. long. Floicers yellowish white with the 

 under side tinged with red and a dull purple centre. Follinia 0'4 mm., gland 

 0"15 mm. long. 



To be inserted in tbe genus near H. papiiana, Schlecliter, which has differently shaped 

 leaves and flowers with a larger calyx, a larger rose-red corolla, and somewhat diverse 

 corona. The flowers are all detached, so that it is impossible to say how many of them 

 go to the umbel. 



HoYA (§ Plocostemma) letjcantha, S. Moore, sp. n cv 



Mami gracillimi, bene foliosi, puberuli, deinde glabrescentes. Folia inter minora, 

 breviter petiolata, lanceolata, acuminata, basi obtusa leviterve rotundata, niargine 

 reciirva, coriacea, utrobique glabra, 3'5-4'5 cm. longa, juxta basin 8-10 mm. lata. 

 Umbelke circa 20-floi-ae ; pedunculus gracilis, foliis brevior, puberulus, segre 20 mm. 

 longus ; pedicelli pedunculo subaequilongi (17 mm. longi), vix omnino glabri. Flores 

 parvi, albi. Calycis segmenta oblongo-ovata, obtusa, extus microscopice puberula, 

 1 mm. longa. Coi^olla rotata, glabra, 6 mm. diam., segmenta pansa verisimiliter 

 recurva, tdtra medium divisa ; lobi ovati, acuti, glabri. Coronce phylla parvula, 

 gynostegio multo breviore, 0'5 mm. longa, ascendentia, a latere compressa, postice 

 (externe) obtusa, tenuiter crassiuscula. Antherarum appendices prominentes, 

 ovatse, erectae. PolUnia oblonga, obtusa ; glandula suborbicularis, minuta. 

 Canoe Camp, 500 ft. 

 Branches rigid though slender, 1-1-5 mm. in diameter. Leaves grey-green when 



dry, paler below, nervation very plain on the upper, less so on the lower side ; petioles 



slender, 2-3 mm. long, puberulous. Corona with the tips of its leaves about I'o mm. 



below the tips of the anthers. PolUnia 0-J. mm. long, gland about 0-08 mm. in 



diameter. 

 After much thought it appears that this and the following species must be referred 



to the § Plocostemma, although very small flowers are an unusual feature of the 



section. In both cases buds only are present, though just about to open ; hence it 



cannot be said definitely that the corolla-lobes are reflexed. 



HoYA (§ Plocostemma) pusilliflora, S. Moore, sp. nov. 



Mami scandentes, volubiles, graciles. Folia breviter petiolata, lanceolata vel lanceolato- 

 ovata, longiuscule cuspidato-acuminata, apice obtusa, basi rotundata nisi late 

 obtusa, margine recurva, pergamacea, utrinsecus glabra, usque ad 6-7 cm. 

 lon"-a, 18-24 mm. lata. TJmbelloe circa 20-florBe. Pedunculi gracillimi, foiiis 

 summis fere aequilongi, circa 4 cm. longi. Pedicelli pedunculis multo breviores, 

 filiformes, glabri, 1 cm. longi. Calycis parvuli segmenta ovato-oblonga, obtusa, 

 dorso microscopice puberula, 0-7o mm. longa. Corolla parva, segre 5 mm. diam. 

 Coronce phylla a gynostegio breviter superata, ascendentia, a latere compressa, 

 antice (interne) obtusa, postice obtusa, tenuiter crassiuscula. Antherarum 

 appendices abbreviatae. PolUnia oblonga ; glandula linearis, minuta. 



Camp I, 5U0 ft. 



q2 



