Genus Isodendrion — St. John 
239 
has studied many of these specimens. Most 
of them lack the collector’s name, and nearly 
all lack the date: Many of them include a mix- 
ture of material. It seems as if Hillebrand 
tried to send to Lydgate duplicates from as 
many collections as possible but that he fre- 
quently combined several under a single 
label, omitting some of the localities. Many 
sheets contain three specimens, and, in critical 
genera, they may represent two or three 
species. They are certainly authentic Hille- 
brand specimens, and the written label is in 
Hillebrand’s hand, but it is often generalized 
and incomplete. When Hillebrand’s own col- 
lection was mounted in Berlin, the original 
label was usually discarded. Years later Lyd- 
gate sold his set to Charles N. Forbes for the 
Bishop Museum. Forbes made the new printed 
second label, "Collected by Dr. William 
Hillebrand and J. M. Lydgate,’’ and this was 
placed on all the Honolulu sheets, regardless 
of the identity of the actual collector. It is 
certain in many cases that Lydgate had noth- 
ing to do with the collecting and was merely 
the recipient and owner of the specimens 
years later. Forbes mounted the collection and 
inserted it in the Bishop Museum Herbarium. 
Though this Hillebrand and Lydgate speci- 
men is placed in the same species, it may per- 
haps be different. Its single good leaf blade is 
88X24 mm., or dVi times as long as broad. 
Typical leaves of the Manoa and Wailupe, 
Hillebrand and Lydgate collection, are 2 V 2 
times as long as broad. The same ratio is seen 
in the ink sketch of the Wailupe and Manoa 
original specimen in the Berlin Herbarium, 
made by Rock in 1914. In his "Flora of the 
Hawaiian Islands’’ (p. 19) Hillebrand lists 1. 
lauri folium only from his collection at "Ridges 
of Wailupe!’’ But apparently he had collected 
the plant at Manoa Valley also. If the frag- 
ment, obtained by Rock, of Hillebrand’s 
Wailupe collection is characterized by the 
narrowly oblanceolate blades, then the broad- 
er-leaved one, labeled Manoa and Wailupe, 
may well have come from Manoa, and this 
seems a reasonable inference. Were the Wai- 
lupe specimen complete, one could settle its 
exact identity. But, as it consists of only a few 
fragments of herbage, and as it has a general 
similarity, it is for the time being classed as of 
the same species as the other Hillebrand col- 
lection from Manoa. Manoa and Wailupe 
Valleys are on the lee side of the southern end 
of the Koolau Range, Oahu, and are only 4 
miles apart. 
The species is named for the Reverend John 
Mortimer Lydgate (1854-1922) who, in his 
youth, was field companion and cooperator 
with Hillebrand in the botanical exploration 
of the Hawaiian Islands. 
9 . Isodendrion maculatum sp. nov. 
ILLUSTRATIONS: Figure 9- 
VERNACULAR NAME: "Aupaka.’’ 
DIAGNOSIS TYPi: Frutex 2 m. alta glaber, 
ramis erectis simplicibus 3-4 mm. diametro 
cortice griseo cum sulcis longitudinalibus 
paucis, cicatricibus 3-4 mm. lads pallidis sub- 
orbicularibus in summo minime concavis, 
fasciculis 3, nodis 2-30 mm. plerumque 10- 
20 mm. distantibus, ramulis 10-19 cm. longis 
cum 8-12 folds adscendentibus in 45° et non 
aggregatis, stipulis 3-3.5 mm. longis paene 
symmetrici-deltoideis glabris carina incras- 
sata marginibus brunneis membranaceis, peti- 
olis 5-17 mm. longis, laminis 6.4-22 cm. 
longis 18-77 mm. lads firme chartaceis supra 
nigri-viridibus infra pallide viridibus ob- 
lanceolatis apice breve subacuminatis et late 
obtusi marginibus remote humiliter serrulatis 
excepta ad basim nervis elevatis reticulatis 
prominentibus^ praesertim infra, inflorescen- 
tibus axillaribus unifloris glabris, pedunculis 
1 mm. longis, bracteis 1 mm. longis lance- 
olatis, pedicellis 2.5 mm. longis, sepalis 2-2.5 
mm. longis lanceo-ovatis glabris subtilibus in 
centro obscuro-lineatis marginibus mem- 
branaceis pellucidis, petalis irregularibus gla- 
bris, petala inferiora 7.8 mm. longa (post- 
quam bullanda) limbo 2.6 mm. longo 1.7 
mm. lato ovali subcarnoso praesertim in parte 
basali, ungue 5.2 mm. longo 1.4 mm. lato in 
basi 5-nervoso membranaceo ad apicem firmo 
