Flora of Romonum Island — Stone 
107 
RHAMNACEAE 
Colubrina asiatica (L.) Brongniart 
TILIACEAE 
Triumfetta procumbens Forst. f. (5308) 
Triumfetta semitriloba Jacq. ? ; "sacawer” 
(5280) 
MALVACEAE 
Abelmoschus moschatus (L.) Medik; "nikono- 
koon” (5288) 
Hibiscus tiliaceus L. (5290) 
Malvastrum coromandelianum (L.) Garcke; 
"siyoyinen” (5286) 
Thespesia populnea (L.) Solander ex Correa 
STERCULIACEAE 
Heritiera littoralis Dry. (5299) 
Copiously fruiting, Jan. 28, 1965. 
GUTTIFERAE 
Calophyllum inophyllum L. ; kamani or Alexan- 
drian laurel 
CARICACEAE 
Carica papaya L. 
Only a few seen. 
PASSIFLORACEAE 
Passi flora foetida L. var. hispida (DC.) Killip; 
"pwompworn” (5279) 
LYTHRACEAE 
Pemphis acidula Forst. 
Apparently rare on Romonum ; only one indi- 
vidual seen. 
RHIZOPHORACEAE 
Bruguiera gymnorrhiza (L.) Lam. 
Also called B. conjugata (L.) Merrill. The 
usual form has the calyx scarlet; a form with a 
pure white calyx was described from Namo- 
nuito (Stone, 1959). This requires a nomencla- 
tural adjustment, as follows: 
Bruguiera gymnorrhiza forma alba B.C. 
Stone, comb. nov. 
B. conjugata (L.) Merr. forma alba B.C. 
Stone, Pacific Sci. 13:102 (1959). Type: 
Namonuito, Pisarach Islet, 2 July 1957, 
Stone 2144 (bishop museum). N.v. "ong.” 
Rhizophora apiculata Bl. ; "ciyaan iimw” 
Rhizophora mucronata Lam.; ''ciyaan wuumw” 
(5297) 
Since Rhizophora stylos a Griff, has been 
reported from Guam ( Stone 4437, GUAM and 
leiden) by Ding Hou (in litt. ) , it may turn 
up in other parts of Micronesia also. The three 
species are distinguished in Flora Malesiana 
(Ser. I, vol. 5, part 4, p. 450), 1958, as 
follows : 
1. Inflorescences 2 -flowered, shorter than the 
petiole, in the axils of leaf scars of last 
year’s or last season’s growth; bracteoles at 
the base of the flower completely connate; 
petals glabrous R. apiculata 
1. Inflorescences 2— 16-flowered, longer than 
the petiole, in the axils of current year’s or 
season’s growth; bracteoles connate only at 
base; petals hairy 
2. Style obscure or very short, to 1.5 mm 
long R. mucronata 
2. Style filiform, 4-6 mm long . R. stylo sa 
Since only the first two species are recorded 
in Kanehira’s check list of the Micronesian flora 
(1935), it will be of interest to see if the occur- 
rence of R. stylosa elsewhere in Micronesia can 
be established. 
SONNERATIACEAE 
Sonneratia caseolaris (L.) Engler (5295) 
COMBRETACEAE 
Lumnitzera littorea (Jack) Voigt (5293) 
Terminalia samoensis Rechinger 
LECYTHIDACEAE 
Banin gtonia asiatica (L.) S. Kurz 
Barringtonia racemosa (L.) Blume (5302) 
