1903] UNDESCRIBED PLANTS FROM GUATEMALA | 5 
Los Verdes, Depart. Amatitlán, Guat., alt. 1100", Aug. 1893, 77eyde et 
Lux, n. 6157 ex Pl. Guat. &c., quas ed. Donn. Sm. 
Sideroxylon uniloculare Donn. Sm.—Folia glabra maxima 
oblongo- vel obovato-elliptica cuspidato-acuminata basi cuneata, 
nervis lateralibus parallelis remotis utrinque conspicuis, petiolis 
brevibus. Calycis segmenta basi coalita jam in alabastro aperta. 
Corollae calyce dimidio longiorislobi orbiculares. Stamina cum 
saminodiis eis paullo longioribus lanceolatis sub apice tubi 
affixa, antheris subsessilibus lateraliter dehiscentibus. Ovarium 
depresso-obpyramidatum 1-loculare, ovulo unico nunc pendulo 
nunc lateraliter affixo. : 
Folia coriacea r3-21*" longa 6-9*" lata, cuspide obtusiuscula, nervis 
lateralibus inter se 1—1.5*" distantibus utrinque 12-14 subtus validis, venis 
minutissime reticulatis subtus prominulis, petiolis canaliculatis 8-15 ?" longis. 
Pedicelli ferrugineo-pubescentes dense fasciculati 7?" longi, floribus 5- meris. 
Calyx ferrugineo-pubescens 2?" altus usque ad duas partes fissus, segmentis 
ovatis consimilibus. Corolla glabra, lobis tubum bis superantibus margine 
erosis. Antherae ovatae 0.5?" longae pilis albidis conspersae. Staminodia 
1"" longa subintegra. Ovarium pubescens 0.75"" altum 1.5"" latum, stylo 
subulato 0.5?" longo, stigmate parvo integro. Bacca mihi non visa. 
Secus Río De Las Vueltas, Tucurrique, Costa Rica, alt. 635", Maj. 1899, 
Tonduz, n. 13358 herb. nat. Cost. 
Styrax polyneurus Perk.— Arbor, rami subteretes, juniores 
fusco-tomentosi, adulti demum glabrescentes, folia 1-1.5*? longe 
petiolata, lanceolata vel obovato-lanceolata vel obovato-oblonga, 
12—9*" longa, 4—-2.25*" lata, basi in petiolum a latere compressum 
sensim cuneato-angustata, apice acuta vel breviter late acuminata, 
apice ipso acutiusculo, papyracea vel subchartacea, integra, supra 
juniora hinc inde pilos stellatos minutos gerentia, adulta glabra, 
subtus pilis albidis lepidotis stellatis tomentosa, nervis 6—9-jugis 
venisque supra vix, subtus valde prominentibus, venis validioribus 
inter sese parallelis rectangulariter.costae insedentibus, omnibus 
dense reticulatis; flores ignoti; fructus ovoideus, 7"" longus, 
3-4?" crassus, breviter mucronatus, lepidibus "T dense 
tectis.— Ab incolis Aeszna dicitur. 
This species is closely related to .S. »eyristicifolius Perk. in Bot. Jahrb. 
31 : 481, but differs from it in the form and nervature of the leaf, and in the 
color and shape of the hairs on the under surface. It is very noticeable that 
