Mr. J. Miers on the genus Marckea. 185 
XX1.— Contributions to the Botany of South America. 
By Joun Miers, Esq., F.R.S., F.LS. 
[Continued from p. 142.] 
MaRCKEA. 
Or this genus no further information has hitherto been re- 
corded beyond the short account first published by Richard, and 
so little has its affinity been understood, that it was considered 
by Endlicher as related to the Nicotianee. Its alliance however 
is evidently with Solandra and Juanulloa, agreeing with the latter 
genus in the structure of its calyx and fruit, and differing in the 
hypocrateriform shape of its corolla, with broad, expanded and 
almost rotate border, and in its scarlet colour. 
From a plant in Sir William Hooker’s herbarium, with only a 
single flower and fruit, I have been able to make the following 
analysis, which in some respects is incomplete, as I was anxious 
not to injure the specimen. 
Marcxkera, L. C. Richard. Lamarckea, Pers.—Calyx 5-sepalus, 
persistens, vix augescens : sepala lanceolata, acuminatissima, 
imo angustata, primum ultra medium, marginibus ciliatis, in 
tubum ‘pentagonum valvatim conniventia, hive superne lineari- 
attenuata, erecta, libera, dein m fructu omnino sejuneta. Co- 
rolla hypocrateriformis, tubo elongato, cylindrico, fauce sub- 
inflato, limbo 5-partito, lacinus oblongis, rotundatis, rotato- 
expansis, subreflexis, sestivatione imbricata. Stamina 5, equa- 
ha, paulo supra basin corollie orta, basi lanata, filamenta erecta, 
tenuia, anthere in faucem corolle incluse, 2, loculares , lineari- 
oblong, lobis disyunctis, puncto medio affixis, rima marginali 
longitudinaliter dehiscentibus. Ovarium 2-loculare, placentis € 
dissepimento utrinque cruciatim tenuiter partientibus, hine in- 
crassatis undique ovuligeris, ovulis angulo basali nexis, adscen- 
dentibus. Stylus tenuis, longitudine staminum. Stig gma m- 
tegrum? Bacca fere capsularis, exsucca, evalvis, pericarpio 
tenui indehiscente, sepalis persistentibus tecta, oblonga, 2-sul- 
cata, 2-locularis. Semina plurima, imbricatim disposita, ob- 
longa, acuminata, imo gibba, hilo in angulo basali, adscen- 
dentia, testa laxa. Hmbryo intra albumen parcum, carnosum, 
axillaris, leviter arcuatus, radicula infera tereti, cotyledonibus 
ovatis, compressis, incumbentibus, squilonga.—Suffrutices 
Guianenses et Aniillani scandentes, ramis dependentibus ; folia 
alterna, petiolata, elliptica, acuta, integra, glabra; vacemi aail- 
lares ; corolla coccinea. 
1. Marckea coccinea, L. C. Rich. Act. Soc. Hist. Nat. Par. 107 ; 
A. Raich. Dict. Class. x. 168. cum icone. Lamarckea coccinea, 
