COLLECTED IN DUTCH NEW GUINEA. ; 115 
than on the lower side; reticulum moderately close; petioles stout, deeply channelled 
above, microscopically puberulous, 3-5 mm. long. Flowers yellowish white with the 
under side tinged with red and a dull purple centre. Pollinia 044 mm., gland 
0:15 mm. long. 
To be inserted in the genus near H. papuana, Schlechter, 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. 
Hora ($ PLOCOSTEMMA) LEUCANTHA, S. Moore, sp. n cv 
Rami gracillimi, bene foliosi, puberuli, deinde glabrescentes. Folia inter minora, 
breviter petiolata, lanceolata, acuminata, basi obtusa leviterve rotundata, margine 
recurva, coriacea, utrobique glabra, 3:5-4:5 cm. longa, juxta basin 8-10 mm. lata. 
Umbelle circa 20-flore ; pedunculus gracilis, foliis brevior, puberulus, egre 20 mm. 
longus ; pedicelli pedunculo subzequilongi (17 mm. longi), vix omnino glabri. Flores 
parvi, albi. Calycis segmenta oblongo-ovata, obtusa, extus microscopice puberula, 
l mm. longa. Corolla rotata, glabra, 6 mm. diam., segmenta pansa verisimiliter 
recurva, ultra medium divisa; lobi ovati, acuti, glabri. Corone phylla parvula, 
gynostegio multo breviore, 0'5 mm. longa, ascendentia, a latere compressa, postice 
(externe) obtusa, tenuiter crassiuscula. Antherarum appendices prominentes, 
ovatz, erecte. Pollinia 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 1:5 mm. 
below the tips of the anthers. Pollinia 0'4 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 ($ PLocosrEMMA) PUSILLIFLORA, S. Moore, sp. nov. 
Rami 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. 
longa, 18-24 mm. lata. Umbelle circa 20-flore. Pedunculi gracillimi, foiiis 
summis fere equilongi, circa 4 cm. longi. Pedicelli pedunculis multo breviores, 
filiformes, glabri, 1 em. longi. Calycis parvuli segmenta ovato-oblonga, obtusa, 
dorso microscopice puberula, 0-75 mm. longa. Corolla parva, wgre 5 mm. diam. 
Corone phylla a gynostegio breviter superata, ascendentia, a latere compressa, 
antice (interne) obtusa, postice obtusa, tenuiter crassiuscula. Antherarum 
appendices abbreviate. Pollinia oblonga; glandula linearis, minuta. 
Camp I, 500 ft. 
Q 2 
