568 | | UMBELLIFERZ. 
EXPLANATION OF TAB. XXXIV. Fiee. 3 6-8. 
Two umbels of male flowers, natural size. 
Fig. 6, a male bud; 7, a partially opened male flower; 8, a fully opened fertile (?) flower: all 
enlarged. 
3. Oreomyrrhis? planipetala, Hemsley, Diag. Pl. Nov. pars 1, p. 16. (Tab. 
XXXIV. pro parte.) | 
Scaposa, glabra, foliis angustis pinnatipartitis, segmentis palmatipartitis basi angustissimis, lobis 
acutis, petiolo ad medium tantum vaginante, umbellis simplicibus, floribus simulate hermaphro- 
ditis vel monoicis, calycis dentibus prominulis, petalis obovatis integris planis. 
Herba scaposa, glabra. Folia petiolata, angusta, pinnatim dissecta vel subpinnata, 6—8-pollicaria ; 
segmenta palmatifida, basi angustissima, vix articulata, 3-4 lin. longa lataque, lobis acutis ; 
petiolus ad medium tantum vaginans, parte libera 2-8 poll. longa. Scapus gracilis, nudus, 
striatus, 15-pollicaris (in specimine Hartwegiano) ; umbelle simplices, multiflore, pedicellis gra- 
cilibus ad semipollicaribus ; involucri bractez lineari-lanceolate, subobtuse, 24-34 lin. longe, 
Flores simulate hermaphroditi vel monoici; calycis dentes conspicui; petala plana, obovata, 
obtusa ; ovarium evittatum ?, mericarpiis subangulatis. Fructus maturus nobis ignotus. 
Soura Mexico, Bolafos (Hartweg, 6). Hb. Kew. 
EXPLANATION OF TAB. XXXIV. Fiae. 9? 1-5. 
A plant, or portion of a plant, natural size. 
Fig. 1, partially expanded flower; 2, fully expanded flower; 3, a petal; 4, a very young fruit ; 
5, a cross section of the same: all magnified. 
This and 0.1 gracilipes probably belong to a distinct genus; but, in the absence 
of ripe fruit, it has been thought better to leave them in the genus to which they 
are doubtfully referred in Bentham and Hooker’s ‘Genera Plantarum.’ ‘Drawings of 
them have been made because they are remarkably distinct from any thing else hitherto 
collected in Mexico. 
18. OTTOA. 
Ottoa, H. B. K. Nov. Gen. et Sp. v. p. 20; Benth. et Hook. Gen. Plant. i. p. 899. 
The only species, am herbaceous plant :— 
1. Ottoa cnanthoides, H. B. K. Nov. Gen. et Sp. v. p. 20, t. 423. 
Souta Mexico, peak of Orizaba, 11,000 feet (Linden, 559), Cerro de Ruminavi 
(Hartweg), Tacubaya, valley of Mexico (Bourgeau, 643); Guaremata, Volcan de Fuego, 
13,000 feet (Salvin)—Southward to Perv. Hb. Kew. 
Tribe SESELINEZ. 
A large and generally dispersed tribe. 
19. CRANTZIA. 
Crantzia, Nutt. Gen. Plant. N. Amer. i. p.177; Benth. et Hook. Gen. Plant. i. p. 906. 
The only species, an herbaceous plant :— 
