126 BOTANY OF THE VOYAGE OF THE SULPHUR. 
Linden (n. 385), near Vera Cruz, and is said to have yellow flowers. Linden’s 
n. 330 from Teapa in South Mexico with white flowers appears to be a sixth 
species quite smooth with a very long tube to the corolla, but I have not had an 
opportunity of examining its structure. 
501. Puumerta rubra, Linn.—A. DC. Prod. v. 8. p. 390.—Guayaquil. 
502. Vinca rosea, Linn.—A. DC. Prod. v. 8. p. 382.—Realejo. 
503. Hamapictyon tomentellum, sp. n., foliis ovato-oblongis brevissime acuminatis basi cordatis 
supra glabris vel minute hirtellis subtus brevissime et molliter glaucescenti-tomentosis, lobis calycinis 
lanceolatis acuminatis vix basi hirtellis corolla tubo 2-3-plo brevioribus, corollz fauce annulari, ap- 
pendicibus tubi antherisque vix exsertis—Guayaquil, gathered also by Hartweg, n. 670, 
Rami volubiles, angulati, glabri vel brevissime glauco-tomentelli. Folia breviter petiolata, 2-3-pollicaria, 
supra pilis brevissimis sparsis scabrella, subtus tomento molli et denso etsi brevissimo obtecta, penninervia, venis 
lateralibus parum conspicuis. Racemi axillares, folio breviores. Pedunculi vix petiolo longiores, angulati, 
minute hirtelli. Flores conferti, pedicellis calyce brevioribus. Calyces 5-6 lin. longi, laciniis ineequalibus 
acuminatis, basi interne glandula brevi lata auctis. Corolle tubus pollicaris, superne constrictior, limbi lacinie 
ample patentes ; corona faucis callosa, latiuscula; appendices lineari-lanceolate, acute, extra faucem brevissime 
prominule. Stamina medio tubo inserta; filamenta, filiformia; anthers connate, sagittate, basi biaristate, 
apice aristato-acuminatz, extra faucem brevissime prominule. Nectarii squame crasse, late, ovate, ovario 
ipso paullo breviores, liberee sed arcte approximate. Stylus filiformis, sub stigmate membrana lobata reflexa 
indusiatus; stigma obtusum. Frolliculi 4-6 poll. longi, conniventes, triquetri, coriacei, extus tomentelli. 
Semina oblonga, triquetra, apice in collum brevem attenuata, coma longa copiosa, Albumen parcum, Embryo 
linearis, cotyledonibus oblongis radicula longioribus. 
This agrees very nearly with Kunth’s description of his Prestonia glabrata 
(Hemadictyon glabratum, A. DC. Prod. y. 8. p. 427) gathered by Humboldt in 
the same locality, but the leaves are constantly clothed underneath with a close 
soft down, so that even if it prove to be a mere variety, it cannot well retain the 
specific name of glabratum, 
504. Ecurtes biflora, Jacq.—A. DC. Prod. v. 8. p. 450.—Var. calycis segmentis fere 6 lin. 
longis.—Salt marshes, Mundiche, Columbia. : 
506. Ecutres trifida, Jacq—A. DC. Prod. v. 8. p- 454.—Calycis lobi potius ovati quam 
oblongi, czetera conveniunt.—Tiger Island, Gulf of Fonseca. 
506, Ecurrss trifida, var. ? major, caule sub nodiis tenuiter tomentellis.—Central America. 
ae adest — quam in preecedente paullo major. Glandule calycis irregulares, Folliculi ultrapedales 
vix torulosi. Semina anguste fusiformia, coma rufa. 
507. Ecurres hirtiflora, A. DC. Prod. yv. 8. p- 456.—Columbia; gathered also by Hartweg 
near Guayaquil, n. 669. 
Folia. breviter petiolate basi profunde auriculato-cordata, juniora supra villosa, Corolle pilis paucis 
— villoste, uti descripte sunt in Z. microcalyce. Czetera omnia conveniunt. 
