184 PROCEEDINGS OF THE AMERICAN ACADEMY. 
UMBELLIFERAE. 
Aprium, L. 
A. Lactniatum, Urb. in Mart. Fl. Bras. xi. pt. 1, 343 (1879). 
Helosciadium laciniatum, DC. Mém. Soc. Phys. Genév. iv. 495 (1828); 
Hook. f. (3), 215; Anderss. (1), 219, & (2), 92.— CuHarves IsL.: 
Darwin, acc. to Hook. f., 1.c¢. Further distrib. Peru to Chili. 
A. LEPTOPHYLLUM, F, Muell. acc. to Benth. Fl. Austr. iii. 372 (1866). 
A. Ammi, Urb. in Mart. Fl. Bras. xi. pt. 1, 341, q. v. for extensive 
synon. Helosciadium leptophyllum, DC. Mém. Soc. Phys. Genév. iv. 
493 (1828); Hook. f. (3), 215; Anderss. (1), 219, & (2), 92. — ALBE- 
MARLE Ist.: Iguana Cove, Snodgrass & Heiler, no. 41 (hb. Gr-). 
James Ist.: Darwin. Further distrib. N. Am, Mex.,S. Am., Austral., 
etc. 
CenTELLA, L. 
C. astatica, Urb. in Mart. Fl. Bras. xi. pt. 1, 287 (1879). Hydro- 
cotyle asiatica, L. Sp. 234 (1753). H. repanda, Pers. Syn. i. 302 
(1805); Caruel (1), 623.— Cuatuam Isx.: Chierchia, acc. to Caruel. 
Further distrib. N. Am., S. Am., Asia, etc. 
Hyprocoryte, L. 
H. galapagensis, nov. sp., glaberrima, repens, radicibus ad nodos 
- fibrosis petiolis erectis teretibus, foliis orbicularibus peltatis prope centrum 
insertis 12-13-radiati-nervatis, margine duplo dentata, nervis venulisque 
translucentibus, pedunculis erectis, umbellis simplicibus sub 16-floribus 
non proliferis: involucris bracteis ovatis brevibus pedicellis flores quadri- 
quintuple excedentibus: calycis limbo obsoleto, petalibus ovatis obtusis 
patentibus, albis, fractu latiori quam longo basi rotundato vel subcordato. 
Hf. umbellata, Rob. & Greenm. (1), 146, not L. — CHaTHam Isu.: 
southwest end, upper region, Baur, no. 150 (hb. Gr.). Near H. umbel- 
lata, L., which it resembles rather closely in habit, flowers, and fruit, the 
leaves, however, differ rather conspicuously by their doubly dentate not 
crenate margin from the Linnaean species. Transitional forms have been 
sought in vain in material of H. wmbellata from many other parts of the 
wor. 
PETROSELINUM, Koch. 
,, SATIVUM, Hoffm. Gen. Umb. 177 (1814); Anderss. (1), 219, & 
(2), 92. <Apiwm Petroselinum, L. Sp. 264 (1753). Carum Petrose- 
