36 
the minute * Bulbostylis capillaris var. trifida, Centrolepis novo-guineensis in 
tufts, the first record of the genus in New Guinea, *Xyris pauciflora, 
°Eriocaulon leucogenes, very variable in size, * burmannia disticha, up to 1 m., 
one or two examples of the little white °Spiranthes papuana ?, *,Polygonum 
alatum, the small yellow * Utricularia bifida, and the mauve *U. racemosa 
from a few cm. to 2 dm. in height, both new records for New Guinea, 
dotted the surface ; while abundant patches of the yellow and red Riedelia 
montana var. puberula, also var. °arfakensis, cream and dark red, both about 
-50 m. high, with the beautiful terrestrial orchids, °Dendrobium fruticicola, 
the foliage -50 m., above which the brilliant orange flowers, red when older, 
rose to ‘30 m., D. latifrons, also yellow, and the splendid °D. rhomboglossum, 
1m. high with large convex flowers, magenta-pink outside, white inside, borne 
the whole length of the rhachis, made glorious patches of colour, blended 
with small slender plants of Halorrhagis suffruticosa, Oldenlandia nutans, and 
Coleus Gibbsew, white to mauve, all of similar habit and dominant on the 
marsh in all situations; young plants of Nepenthes maxima var. nana, the 
mature trailing over any support, with * Lycopodium divaricatum abounded. 
Shrubs.—As the above plants eased off and a ranker growth inhibited 
close burning, shrubs occurred in small groups, chiefly * Backea Srutescens, 
°Rhododendron Devriesianum, of which the magnificent white flowers, turning 
pink later and fragrant at night, are about 1 dm. across, the whole inflor- 
escence being 10 dm. in diameter, °R. letum, the little profuse flowering 
°R. Vonroemeri, and the bright red R. Gibbsew, all further emphasize the 
wonderful colour-scheme of the more open portions of this interesting marsh 
association. 
Denser Sedge Growth in Boggy Areas. 
Boggy areas with deep ditches, standing water, or larger streams bore an. 
impenetrable sedge-growth which included * Dryopteris Beddomei, * Lyco- 
podium divaricatum, *Cladium faleatum and *C. germanicum, * Scinpus 
setaceus, °Trisetum latifolium, Ischemum aristatum var. arfakensis, * Juncus 
lampocarpus, °Phaius Tankervillee var. papuanus, the flowers brown, white 
inside, Halorrhagis suffruticosa, Oldenlandia nutans, Coleus Gibbsee, and 
* Emilia sonchifolia, all drawn up to the level of the surrounding sedge. 
In other boggy areas sloping down to the lake, generally under water, 
* Juncus lampocarpus predominated, easing off with * Carex Gaudichaudiana 
to the sand-pan association. 
Edging the lake, limiting the white coarse quartz-sand beach, a higher 
and drier sandy bank, well bound together by the roots of the sedges, and 
broken in parts where small streams ran into the lake, carried * Marchantia 
polymorpha, * Lycopodium divaricatum and *L. complanatum, Cladium arfak- 
ense and *C. germanicum, *Carex Gaudichaudiana, *Gahnia psittacorum, 
_ *Rhynchospora aurea and *R. glauca, °Trisetum latifolium, * Dianella 
