FLORA OF THE GALAPAGOS ISLANDS. 179 
Cerevs, Mill. 
C. -GALAPAGENSIS, Weber, Bull. du Mus. d’hist. nat. Paris, 1899, 
p- 812 (1899).— Cuartes Ist.: Du Petit-Thouars. Endemic. This 
can scarcely be regarded as a described species. 
C. nesioticus, K. Sch. nov. sp. in litt., “ humilis 30 em. longitudinem 
non attingens ; caulibus caespitosis et e basi communi in omnes partes 
more spinarum Echini radiantibus costatis ubique spinulis numerosis 
atrocastaneis tectis; costis humilibus 8 mm. vix superantibus alte crenatis 
et in tubercula fere perfecte dissolutis; areolis orbicularibus, 2.5 mm. 
diametro lano sparso exigue tectis; spinis quam 40 pluribus inaequalibus 
saepe (praesertim infimis) apice fractis in unam centralem et alias exteriores 
non distributis, maximis 3 cm. longis omnibus quam setae equinae vix 
rigidioribus erectis strictis divaricatis non pungentibus; floribus 7 cm. 
longis; ovario subgloboso subobliquo leviter tuberculato et spinulis ad 
5 mm. longis flavo-fuscis radiantibus armato; tubo perigonii angusto 
item in areolis spinoso, lobis exterioribus lanceolatis 1.2 cm. longis vix 
2 mm. latis, interioribus etiam angustioribus et magis linearibus verosi- 
militer albis; staminibus prope faucem, filamentis perbrevibus non 
1 mm. longis, antheris bis vel paulo ultra longioribus; fructu ellipsoideo 
in summo spinoso-areolato basi acuto 2.5 cm. longo et 1.3 cm. crasso; 
seminibus numerosis, 1.2 mm. longis ellipsoideis rufis leviter punctatis.” — 
ALBEMARLE Iszt.: Black Bight, Snodgrass & Heller, no. 923 (hb. Berl. 
& hb. Gr.); lava fields, Elizabeth Bay, Snodgrass & Heller, no. 939 
(hb. Berl. & hb. Gr.); Point Christopher, Snodgrass & Heller, no. 
932 (hb. Berl. & hb. Gr.). Narsoroven Ist.: eastern args on barren 
black Sah epentton & Heller, nos. 919 (hb. Berl. & hb. Gr.), 927 
(hb. Berl. & hb. Gr.). “Note. — This species is a very peculiar one 
from its long brown non-pungent spines, which clothe the stem so densely 
that its surface is invisible. I have never before seen a species of the 
genus with such short filaments as in this. ‘The petals are also uncom- 
monly narrow. Probably the flower is white. I think it can hardly be 
compared with either of the two species of Cereus thus far known from 
the Galapagos Islands. From C. Thouarsii, Weber, which is said to be 
similar to C. multangularis, it is perfectly distinguished by the mode of 
growth and by the much smaller fruit which does not at all resemble a 
large prune” [K. Sch. in litt.]. Endemic. 
C. sclerocarpus, K. Sch. nov. sp. in litt., “arborescens ; caule prin- 
cipali 3-6 m. alto 15-22 em. diametro ramos paucos sibi saepius paral- 
lelos gerente ; articulis costatis, costis in sectione transversa triangularibus 
