204 
JOSEPH F. ROCK 
Unfortunately the writer was compelled to write an addendum in which 
there are described species and varieties belonging to the section Cylin- 
drocalyces. 
He would also call attention to C. Pickeringii, the synonymy of which 
is thoroughly discussed under Cyrtandra Oliveri in the preceding paper. 
The task of arranging these difficult plants was not an easy one, and the 
writer would refer the reader to the introductory remarks in the first paper 
of the series, so that he may appreciate the difficulties encountered. 
Section five: Microcalyces cinereae Hillebr. Fl. Haw. Isl. 326. 1888 
Calyx small, five-fid to the middle into narrow lobes. Corolla erect 
with small lobes. Flowers many in open cymes. Leaves broad, obovate 
or elliptical. Tomentum, when present, short-cinereous or pale ochraceous. 
The species of this section are characterized by the small calyx and 
small calycine lobes; they certainly form a distinct group, though some are 
related to species of the section Crotonocalyces, as for example Cyrtandra 
Garnotiana to C. honolulensis . Cyrtandra triflora is placed in this sec- 
tion but with some doubt, as the writer has been unable to examine the 
type. The other species of this section are C. laciflora and C. polyantha. 
A single new species belonging to this section has been found on Hawaii; 
it is a small tree fifteen feet or more in height, and grows in the vicinity of 
the Volcano of Kilauea in the fern forests, but especially in Mr. W. M. 
Giffard's forest residence, Kalauilehua. It has been named after Mr. 
Giffard (Cyrtandra Giffardii), who recently collected splendid specimens 
of Cyrtandreae on Hawaii. 
Cyrtandra triflora Gaud. Bot. Voy. Uranie 447, t. 52. 1826 
"Foliis oblongis aut ellipticis, brewter acuminatis, basi cuneatis, leviter 
serratis, supra glabris, subtus secus nervos adpresso-pubescentibus ; 
pedunculis trifloris; calyce glabriusculo, dentibus ovato acuminatis tubo 
brevioribus vel cum hoc vix aequilongis. G. Don Gen. Syst. 4, p. 661. 
neque Hooker et Arn., neque Asa Gray. 
"Folia opposita subaequalia, longa 10-6 cm., lata 4 cm.,, nervi primarii 
laterales utrinque 8-9; petioli 5 cm.; pedunculi 1-2 cm.; fusco pubescentes; 
bracteae 8 mm., oblongae. Calyx 11 mm. longus, minute furf urascens ; 
tubo 6 mm., cylindrico-campanulaceus. Corolla longa 22-25 nim., fere 
recta, extus superne rufe^centi-villosula." 
Ins. Sandwich: Gaudichaud in herb. De Caudolle, Paris. 
Unfortunately the writer has been unable to examine the type of this 
species. It seems that a number of botanists were unable to place this 
species, and it seems too that no one has re-collected it since Gaudichaud's 
, first visit. C. B. Clarke saw the type and states that neither Hooker and 
Arnott's nor Asa Gray's specimens designated as C triflora are referable to 
that species. Hillebrand's specimens referred to that species were described 
by C. B. Clarke as Cyrtandra polyantha. As can be judged from the de- 
