Polygonaceae 
Run: e x gig a n tens Ait. 
Caum 71 (BISH), Christophersen 8 (BISH)., Long 2411 (HAW), Yen 1015 
(BISH). As of this date found only in Devil-.Slide—-Miller Peak area. 
Sterile in August, 1968. 
Chenopodiaceae 
Chenopodium oahuense (Key.) Aellen 
C. sandwicheum Moq. f. mlcrosperrrttm Aellen 
Caum 58, 67 (BISH), Judd 1 CBISH), Christophersen 7 (BISH), Kramer 
and Swedberg 6 (BISH), Long 2410, 2413, 2418, 2444 (HAW), Yen 1019 (BISH). 
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Nyctaginaceae 
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Boe rhavia diffusa L 
Bryan 3a (BISH), Cat® 79 (BIS: 
found only on the sandy beach in Adams 
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Portulacaceae 
Portulaca lutea Sol. 
Cauir. 6fTBISH), Kramer and Swedberg 1 (BISH), Yen 1002 (BISH). 
♦ Portulaca oleracea L. 
Long 2431 (HAW), Ilerbst 1204, 1205 (HAW), Yen 1001 (BISH). 
Portulaca vi llosa Cham. 
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P. caumii P. Br. 
Caum 6o (BISH), Kramer and Swedberg 3 (BISH), Long 24l4, 2433 (HAW) 
Herbst 1207 (HAW), Yen 1003 (BISH). f-Oj. 7. 
P. caumii was described as a new species by F 
with Caum""6'6' "designated as the type. Brown state 
Brown in 1931 (2) 
that P. caumii is 
"allied to P. villosa Chamisso, from which it differs in the color of 
the flower, the commonly flat leaves and the smaller, minutely rugous 
seeds." But Egler (3)—after studying living plants of P. v illosa from 
K6ko Head on Oahu and the islet of Kaohikaipu near Oahu, and^tne collections 
of the Bishop Museum—states that "with the possible exception of a 
statement of petal color," all characters listed from the Nihoa species 
existed in the portulacas of Oahu. The Nihoa specimen collected by Caum 
had white petals, while those of P. villosa generally have the outer third 
to outer half pink. However, Egler did find plantsvrith entirely white 
petals in the colony on Kaohikaipu. After gfowllig plants from Nihoa and 
Kaohikaipu in the botany greenhouse, I concur with Egbertconclusions and 
might add that a number of plants on Nihoa have deep-pink or pink-tipped, 
white petals. These plants were found at an elevation of 165 meters in 
West Palm and Miller Valleys. 
