Mr. J. Miers on the genus Leucophyllum. 253 



campanulata, tubo amplo infundibuliformi, limbo 5-fido, sub- 

 bilabiato, lobis fere aequalibus^ antico subminori reflexo, 2 

 posticis erectiuscalis, omnibus oblongis, obtusis, sestivatione 

 imbricatis. Stamina 5, insequalia, inclusa, corollse dimidio 

 longitudine, 2 antica breviora, quinto interdum rudimentario, 

 rarius omnino deficiente ; filamenta imo tubi affixa, glabra, basi 

 crassiuscula, apice subdeclinata ', antherce sagittato-bilobse, lobis 

 apice nexis, longitudinaliter intus dehiscentibus, quinti inter- 

 dum minimse, aut abortivse. Ovarium oblongum, glandula 

 annulari fere obsoleta imo cinctum, 2-loculare, ovulis plurimis, 

 dissepimento medio prominulo et incrassato utrinque adnatis. 

 Stylus erectus, filiformis, apice declinatus, longitudine sta- 

 minum. Stigma breviter bilabiatum, lobis adpressis. Capsula 

 ovata, coriacea, calyce persistente cincta, septicide debiscens, 

 valvulis apice 2-fidis, marginibus introflexis, imo basi columnse 

 subglobosse placentiferse adhserentibus. Semina plurima, mi- 

 nuta, transversa, oblonga, compressa, dorso plana, quadrato- 

 angulata, longitudinaliter curvata, striato-rugulosa, hilo ventrali 

 et fere basali. Embryo in albumine carnoso oblongus, curvatus, 

 subcompressus, cotyledonibus oblongis, radicula basali tereti 

 vix latioribus, et 2-plo longioribus. — Suffrutices Meocicani,pube 

 brachiato densissime tomentoso vestiti; folia alteima, subparva, 

 crassa, uninervia, breviter petiolata; flores solitarii, aooillares, 

 folio subcequales, breviter pedunculatij corollce tubo calyce 2-3- 

 plo-ve longiore. 



1. Leucophyllum ambiguum, Humb., Bonpl. PL iEquin. ii. 95. 

 tab. 109; H. B. K. ii. 361; — foliis ovatis, basi apiceque acu- 

 tiusculis, utrinque densissime tomentosis, cinerascentibus, ju- 

 nioribus pallide incanis; laciniis calycinis lineari-lanceolatis, 

 extus tomentosis, intus glabris, nitidis, 3-nerviis, corollse tubo 

 amplo 3-plo brevioribus ; ovarii apice, stylique basi pilosis. — 

 Mexico. Actopan, Prov. Mexico, alt. 6600 ped., Bonpland, 

 Atotonilco el Grande, Prov. Durango, Hai'tweg, n. 357. Zi- 

 mapan, Galeotti, n. 7210. 



This is described by Bonpland as a tall shrub, 8 to 15 feet in 

 height, with a stem slightly tortuous, 4 or 6 inches in diameter, 

 covered with a slightly rent bark. It is a very conspicuous ob- 

 ject in the forests, showing itself at a distance by its silvery leaves, 

 and forming a striking contrast with the dark green foliage of 

 the surrounding trees. Its leaves are from ^ to { inch long, 

 5 or 6 lines broad, with a petiole 2 lines in length; its calyx 

 measures 2 or 3 lines, and is smooth within ; its violet-coloured 

 corolla is ^ an inch long, smooth outside and pilose within. This 

 species may readily be distinguished from the others, by its leaves 

 being acute at both ends ; in the older ones the tomentum is of a 



