62 
JOSEPH F. ROCK 
Valley along stream bed, 3,500 feet elevation, in company with Cyrtandra 
Wawrai fruiting Sept. 1909, Rock no. 5961 (type), in herb. College of 
Hawaii (Plate V). 
Cyrtandra umhracculiflora is one of the most distinct new species of 
Cyrtandra found in the Hawaiian Archipelago. It is remarkable for its 
umbellate inflorescence and peculiar leaf bases. As already remarked, 
Kauai possesses the most distinct species of Cyrtandreae as well as of Lobe- 
lioideae. The same can be said of nearly all the other native plants of that 
island. It is somev/hat difficult to place this species, as it is eligible for 
both sections Crotonocalyces and Schizocalyces. The writer has decided 
to place it in the latter section on account of the deep division of the calyx, 
notwithstanding the very broad lobes which in one or two instances seem 
to be united on one side, thus forming a very broad lobe with three short 
triangular teeth. The large leaves would also place it with Section Croto- 
nocalyces. In habit it resembles C. Wawrai, but is otherwise quite different. 
Section Four. Chaetocalyces Hillebr. Fl. Haw. Isl. 326. 1888 
Calyx deeply split into linear or subulate lobes. Flowers mostly subum- 
bellately arranged. Leaves thin, glabrous or hispid, large, ovate to oblong, 
decurrent at the base or acute at both ends. 
The section Chaetocalyces, which Hillebrand still further designates 
as "virides,'' comprises the following species: Cyrtandra Menziesii, C. 
kalichii, C. waiolani, C. gracilis, C. Macraei, and C. Lydgatei. The following 
varieties may be recorded: C. kalichii var. tristis, C. Macraei var. parvula, 
C. gracilis var. suhumhellata, and doubtfully C. Menziesii var. Gaudichau- 
diana. While the other sections furnished a number of new species and 
still more varieties, this section furnished only one new variety. It would 
appear that these species are more settled than are those of other sections 
occurring on the more centrally located islands of the group; of the species 
described in this section four occur on the island of Oahu, only one on 
Molokai and West Maui, and one on Hawaii. Section Microcalyces is 
closely connected with Section Chaetocalyces, and the majority of 'the 
species of the former occur also on Oahu. 
C. tristis Hillebr. ms., which was described by Clarke, has been reduced 
to a variety of C. kalichii Wawra. Hillebrand united it with the latter and 
quoted his manuscript name as a synonym but not as a species. Clarke 
even placed it in a separate section. It took careful study to distinguish 
the two plants from dried material. None of the species belonging to this 
section have as yet been found on Kauai, the oldest island of the group. 
Cyrtandra Menziesii Hook. & Arn. Bot. Beechey Voy. 91. 1841 
Cyrtandra Brighami C. B. Clarke in DC. Monogr. Phan. 5: 221. 1883-1887 
Branches obscurely quadrangular, the young shoots densely ferruginous- 
pilose at the apex; leaves quaternate, oblong, acuminate at both ends, 
