Orchids from Ponape — Hawkes 
7 
distribution, with about 25 species native on 
that island; the present plant is apparently 
closest to D. coerulescens Schltr. The type 
specimen {Hosokawa 6003) was collected on 
the Ponapean Mt. Nanaraut ( = Nanalaut) at 
an elevation of 680 meters. 
Dendrobium ponapense Schltr., Engl. Bot. 
Jahrb. 56: 471, 1920. (§ Grastidium) 
Mt. Sankaku, 1,100 ft. alt.: on tree trunks, 
hanging from Bird’s Nest Ferns, etc. The 
older plants all had an accumulation of or- 
ganic material in the roots; epiphytic; bloom 
white, inside of labellum violet with pale 
median orange stripe. The showiest Den- 
drohium encountered. August, 1950, P. A, 
Adams 29. 
The type of this handsome epiphyte was 
collected by Ledermann on the island of 
Ponape, "ohne nahere Angaben.” It is allied 
to the new Dendrobium Adamsii K. D. Hawkes 
(supra), D. impUcatum Fukuyama and D. 
pruinosum Teijsm. & Binn. Our specimen, 
though incomplete, appears to match rather 
well the type description by Schlechter. Living 
material is in cultivation at the Botanical 
Garden of the University of California at 
Berkeley. 
Dendrobium violaceo-miniatum Schltr., 
Engl. Bot. Jahrb. 56: 470, 1920. (§ Oxy- 
glossum) 
Mt. Tolotom, 2,100 ft. alt.: on trunk of 
Hibiscus tiliaceus, perianth blue, tip of lip 
brownish-orange; common throughout the 
primary forest from 1,300 ft. up; does best in 
open, sunny areas. August, 1950, P. A. 
Adams 1; Mt. Kubersoh, 2,000 ft. alt.: same 
sp. as #1, but flower white. August, 1950, 
P. A. Adams 21. 
This, the second species of section Oxy- 
glossum present in the collection, is a very 
handsome and unusual dwarf plant, reminis- 
cent of a Bulbophyllum Thou, or Eria Ldl. in 
superficial vegetative habit. It is allied to 
Dendrobium lapeyrousioides Schltr. from Kaiser- 
Wilhelmsland, New Guinea. The type speci- 
men (C Ledermann 13413) was collected 'hn 
niedrigem Buschwald, bei Patapat ( = Poto- 
pot), auf Ponape, 200 bis 300 m ii. M.” 
Living material is in our collections at this 
time. 
Dendrobium spp. 
Mt. Beirut, 2,200 ft. alt.: epiphyte, flowers 
not seen. August, 1950, P. A. Adams 12. This 
sterile specimen, of which living material is 
in cultivation at the Botanical Garden of the 
University of California, is perhaps referable 
to Dendrobium impUcatum Fukuyama. 
Palakir: 3^ mile south of Airfield No. 2, on 
hardwood, in deep shade. Flower not seen. 
August, 1950, P. A. Adams 14. Only an in- 
determinable sterile fragment is present. 
Forty-five minutes up trail from Nanpil to 
Tolenkiup: on fallen tree with #8 (Sarcan- 
thinae, sterile), epiphytic, same sp. as #14 
{Dendrobium sp.). August, 1950, P. A. Adams 
13. Living material of this orchid is in the 
Botanical Garden of the University of Cali- 
fornia. 
Mt. Sankaku, 1,100 ft. alt.: on bare tree 
trunks, blooms not seen. August, 1950, P. A. 
Adams 23. Only an indeterminable sterile 
fragment is present. Living material is in our 
collections. 
DIPLOCAULOBIUM (Reichenbach filius) 
Kraenzlin 
% 
In Engl., Pflanzenr. 4, 50, ii, B, 21: 331, 
1910. 
Three species of this very interesting den- 
drobioid genus are now known from the 
Carolines, one of which is apparently new. 
Diplocaulobium carolinense A. D. Hawkes, 
sp. nov. 
Herba parva epiphytica, caespitosa. Rhizo- 
ma breve, repens, cataphyllis obtecta. Pseudo- 
bulbi erecti, in sicco lutei, 6-13 cm. longi, 
basi 3-5 mm. lati, apice 2.5-3 mm. lati, basi 
ovoideo-attenuati, ad apicem versus elongato- 
