504 ACANTHACEA. 
GuaTEMALA (Friedrichsthal); Nicaragua, Granada &c. (Girsted); Panama (Cuming). 
—North part of Sovran America. Hb. Kew. 
[| Dipteracanthus angustus, Griseb. in Bonplandia, 1858, p. 10, from Panama, is most 
likely a Ruellia. | 
3. Ruellia (Ophthalmacanthus) bourgi, Hemsley, Diag. Pl. Nov. pars altera, 
p. 35. (Tab. LXVI.) 
Frutex vel herba robusta, glanduloso-hirsuta, viscosa, radice crassa, tuberosa; caules vel rami 
crassiusculi, tetragoni, nodis tumidis. Folia petiolata, mollia, late ovata, absque petiolo 
usque ad 7 poll. longa et 6 poll. lata, acuminata, acuta, basi rotundata vel breviter cuneata, 
crenato-dentata, venis primariis lateralibus conspicuis; petiolus 1-24 poll. longus. Flores 
speciosi, 3-4 poll. longi, longiuscule pedunculati, in axillis bractearum et foliorum superiorum 
solitarii, basi 2-bracteolati; pedunculi 14-23 poll. longi, crassiusculi, arcuatim adscendentes ; 
bracteole lineari-oblonge, circiter 1 poll. longe ; calyx 1-1} poll. longus, 5-partitus, segmentis 
lineari-oblongis, obtusiusculis, erectis, persistentibus ; corolla basi cylindrico-tubulosa, infra 
medium subito oblique ventricoso-inflata, limbi lobis latis, rotundatis, patentibus ; stamina 
exserta; discus carnosus, pulvinatus; ovarium glabrum, loculis 8-10-ovulatis. Capsulam 
maturam non vidi. 
South Mexico, mountains near Guadalupe, valley of Mexico (Bourgeau, 885 ; Hahn). 
Hb. Kew. . 
A very fine species, allied to R. pulcherrima. 
4. Ruellia campestris, Hemsley. 
Gymnacanthus campestris, rst. in Vidensk. Meddel. 1854, p. 126; Walp. Ann. v. p. 639. 
Costa Rica, Guanacaste (irsted). Hb. Kew? 
[Ruellia concavifolia, Ortega, R. ocymoides, Cav. Ic. Pl. t. 416, is recorded as a 
Mexican plant; but Nees, in DC. Prodr. xi. p. 127, reduces it to Dipteracanthus patulus, 
an Asiatic plant. | 
5. Ruellia dipteracanthus, Hemsley. 
Cryphiacanthus dipteracanthus, Nees in DC. Prodr. xi. p. 199. a | 
Souta Mexico, Cordillera of Vera Cruz, at 2000 feet (Galeotti, 933). Hb. Kew. 
6. Ruellia gemmipara, Nees in DC. Prodr. xi. p. 220. 
Ophihalmacanthus gemmiparus, Nees, loc. cit. ao 
Mexico (Henke). CS 
7. Ruellia densiflora, Hemsley, n. sp. 
Foliis amplis, floribus brevissime pedicellatis in apicibus ramulorum congestis, calyce brevi 5-partito, 
corolla fere recta tubuloso-infundibulari, tubo infra medium gracili dein subito ampliato. 
Frutex?, ramis crassiusculis, subtetragonis, canaliculatis, minute lepidotis. Folia tenuia, longe 
petiolata, oblongo-lanceolata vel ovato-lanceolata, cum petiolo usque ad 10 poll. longa et 
3% poll. lata, utrinque attenuata, apice obtusa, subtus minute lepidota simul in venis primariis 
puberula, supra sub epidermide minute et densissime lineolata, venis primariis transversis 
conspicuis. Flores brevissime pedicellati (pedicellis vix lineam longis), ad apices ramulorum 
brevium axillarium et terminalium arcte congesti (rhachi incrassata 4-8 lineas longa pleio- 
