230 
PACIFIC SCIENCE, Vol. XIV, July I960 
to Hawaii, the Marquesas Is., and the Tuamotu 
Archipelago. 
Stephanostigma Pic.-Ser., Inst. Sci. Madagas- 
car, Mem. ser. B, 3: 112-113, 1951. Type: P. 
analamazaotrensis Martelli, the only species, a 
native of Madagascar. 
Vinsonia Warb., in Engler’s Pflanzenreich IV, 
9: 44, 54-62, 1900. The genus Vinsonia Gaud., 
Bot. Voy. La Bonite, Atlas, pi. 17, 19, 23, 
and 31, (1843) [= 1841], contained 10 species 
when published by Gaudichaud. There were no 
descriptions to accompany the illustrations of 
either the species or the genus, so his specific 
and generic names were all invalid, though some 
of them were later validated by subsequent 
authors. Lectotype: Vinsonia sylvestris Gaud., 
Bot. Voy. La Bonite, Atlas, t. 17, figs. 16-17, 
( 1843) 1841]. It is a synonym of P. Barklyi 
Balf. f. in Baker, FI. Mauritius 397, 1877, a 
native of Mauritius. This is chosen as lectotype 
for section Vinsonia because among the 10 
species published by Gaudichaud in his genus 
Vinsonia, 3 were of this affinity and they made 
a large element of his concept. V. sylvestris was 
well figured by Gaudichaud and is known to be 
native of Mauritius. Brongniart found a holo- 
type of it in the Paris herbarium. Since the genus 
Vinsonia Gaud, was published without a generic 
description, but contained 10 species, the genus 
and species were invalid. In the original pub- 
lication of P. Barklyi, Baker listed V. sylvestris 
Gaud, as a synonym, so the relation to this valid 
name is definite. Of the remaining seven species 
in Gaudichaud s genus Vinsonia, one, V . drupa- 
ceus, was based on fragmentary and dubious 
material. V . lucidus is obscure. V. palustris be- 
longs to section Pandanus. The four species, 
V. elegans, V . humilis, V. Pervilleana, and V. 
purpurascens, belong to the section with the 
phalange narrowed to a small apex on which the 
numerous stigmas are crowded. This group is 
here described as a new section. It could bear 
the name Vinsonia, but the writer prefers to 
typify it by P. mammillaris Martelli and Pic.-Ser., 
a modern and better documented species. To 
preserve usage he prefers to typify Vinsonia by 
choosing one of the three species, V . sylvestris, 
V . stephanocarpa, and V . utilis, which Gaudi- 
chaud figured, that represent the section with 
broad phalange, apex entire or shallowly lobed, 
and with the few stigmas remote. Of the three 
species, V. sylvestris Gaud, is chosen here as the 
lectotype for the section Vinsonia. The correct 
name for the lectotypic species is Pandanus 
Barklyi Balf. f. in Baker. 
For the first time the section Vinsonia is here 
typified. At the same time it is restricted to 22 
instead of 55 species. Of the remainder, P. Ey- 
douxia is referred to the section Pandanus. Four 
species, and perhaps three doubtful ones, are 
assigned to the new section Dauphinensia. The 
distinctive characters of this were singled out 
by Martelli and Pichi-Sermolli, in Inst. Sci. 
Madagascar, Mem., ser. B, 3: 35-3 6, 1951, but 
they did not separate it as a section. Then, 26 
species are grouped in the new section Mammil- 
larisia. This is also a segregate from Vinsonia 
as formerly defined. 
The generic name Vinsonia Gaud, was 
amended to Vingonia by D’Alleizette, in his 
Explic. Descr. PI. de 1’Atlas 117, 1866. He failed 
to supply the missing descriptions, so his re- 
publication of the binomials is also invalid. His 
alteration of the generic name was orthographic, 
insignificant, and, under the rules of nomencla- 
ture, unnecessary. In concord with Vaughan and 
Wiehe (Linn. Soc. Bot., Jour. 55: 11, 1953) the 
section Barklya Warb. which was published in 
Engler’s Pflanzenreich IV, 9: 44, 62, 1900, is 
reduced to synonymy. The 22 species of Vin- 
sonia occur in: east Africa (2), Madagascar 
( 1 ) , Seychelles ( 1 ) , Reunion (2), Rodriguez 
( 1 ) , Mauritius (11), Philippines (2), Kusaie 
( 1 ) , and Australia ( 1 ) . 
THE GENERIC NAME 
Discussion is in order, concerning the publica- 
tion of the generic name Pandanus, commonly 
attributed to Carolus Linnaeus the son (1781). 
It was first used as a generic name in 1743 by 
Rumphius in the fourth volume of his Her- 
barium Amboinense. There he described in great 
detail 11 species and illustrated 8 of them, each 
by a large, detailed drawing. He coined the 
generic name Pandanus, deriving it from the 
Malayan vernacular name of the trees, "pandan.” 
Though no description of the genus was in- 
cluded, his treatment, the first under Pandanus, 
was by far the best for the next century. One 
