GENTIANEZA. 345 
calycis lobi anguste lanceolati, acutissimi, corolle tubo arcte appressi ; corolla anguste tubulosa, 
infra medium angustior, lobis ovato-orbicularibus, brevissime acuminatis, vix lineam longis ; 
stamina inclusa; stylus exsertus, stigmate peltato. 
GuATEMALA, Sierra del Mico (Bernoulli, 924). Hb. Kew. 
3. Leianthus nigrescens, Griseb. Gen. et Sp. Gentian. p. 199; Bot. Mag. 
t. 4043. 
Petasostylis nigrescens, Griseb. in DC. Prodr. ix. p. 71. 
Lisianthus nigrescens, Cham. et Schl. in Linnea, vi. p. 388. 
Lisianthus cuspidatus, Bertol. Fl. Guat. t. 37. 
Leianthus cuspidatus, Griseb. in DC. Prodr. ix. p. 82. 
Sour Mexico, Mirador (Linden, 328), Cordillera of Oaxaca, at 3000 feet ( Galeotti, 
1473), Papantla (Liebmann), Vera Cruz to Orizaba (Miller, 1399), Tanetze, Talea, and 
Comaltepec (Hartweg), Chiapas, foliis multo latioribus (Ghiesbreght, 702) ; GuaTEMALA, 
(Velasquez, Skinner); Costa Rica, Pacaca (Girsted). Hb. Kew. 
4. Leianthus saponarioides, Griseb. Gen. et Sp. Gentian. p. 198. 
Lisianthus saponarioides, Cham. et Schl. in Linnea, vi. p. 389. 
Petasostylis saponarioides, Griseb. in DC. Prodr. ix. p. 71. 
Sout Mexico, Papantla (Schiede), without locality (Sumichrast, 1558)? Hb. Kew. 
5. Leianthus seemannii, Griseb. in Seem. Bot. Voy. ‘ Herald,’ p. 170. 
Costa Rica (Endres, 108).—Danrien. Hb. Kew. 
6. Leianthus skinneri, Hemsley, n. sp. 
Fruticosus ?, foliis angustis ad semipedalibus tenuissimis (in siccis), ramulis lateralibus folia aequan- 
tibus apice laxe 6—-]2-floris, calycis lobis apteris, corollz tubulosz lobis latis brevibus, stigmate 
capitato. 
Frutex? glaberrimus, internodiis brevibus. Folia longe petiolata, tenuissima (saltem in siccis), 
lanceolato-oblonga, 4—6 poll. longa, utrinque longe attenuata, venis primariis lateralibus 
utrinque 2, prominulis, distantibus, longe arcuatis. Flores 13-2 poll. longi, laxe ternatim 
cymosi, pauci ad apices ramulorum gracilium lateralium dispositi, pedicellis brevibus vel 
longiusculis, gracilibus ; calycis lobi ovato-lanceolati, acuti, dorso apteri; corolla tubulosa, 
infra medium multo angustior, lobis ovatis, acutis, 14-2 lineas longis ; stamina inclusa ; stylus 
exsertus, stigmate capitato. Capsula oblonga, semipollicaris ; semina lacunosa. 
GuatemaLa (Skinner); Panama, Chagres (Fendler, 137). Hb. Kew. 
3. ERYTHRAA. 
Erythrea, L. C. Rich. in Pers. Syn. i. p. 283; Benth. et Hook. Gen. Plant. 1. p. 809. 
Annual and perennial herbs. Upwards of thirty species have been described. They 
are widely dispersed in the temperate and subtropical regions of the northern hemisphere, 
including a distinct one in the Sandwich Islands; one occurs in Chili, and another in 
Australasia. The Mexican species greatly need revision. 
1. Erythrea calycosa, Buckley in Proc. Acad. Philad. 1862, p. 7; A. Gr. 
Synop. Fl. N. Am. ii. p. 113. 
South Uran; Arizona; New Mexico; West Texas.—NortH Mexico (ex A. Gray), 
BIOL. CENTR.-AMER., Bot. Vol. II., February 1882. 2y 
