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Pakistan | Family List | Gentianaceae

12. Jaeschkea Kurz in J. As. Soc. Beng. 39:229. 1870. in Flora 54: 275. 1871, Clarke in Hook. f., Fl. Brit. Ind. 4: 119.1883, Schiman-Czeika in Rech. f., Fl. Iran. 41: 22. 1967, R.R. Stewart in Nasir & Ali (eds.), Ann. Catalogue Vasc. Pl. Pak. Kashm.: 560. 1972, Polunin & Stainton, Conc. H. Him. 103. 1987, Ho in Fl. Pop. Rep. Sin. 62: 319. 1988, Omer & Qaiser in Pak. J. Bot. 24:101.1992.


Department of Botany, University of Karachi, Karachi-75270

Jaeschkea oligosperma

Credit: M. Rafiq

Erect, annual-biennial herb. Basal leaves rosulate, cauline leaves opposite, linear-lanceolate or ovate. Inflorescence a pedunculate cyme or flowers solitary. Flowers bisexual, zygomorphic, pentamerous, campanulate (rarely tubular). Calyx mostly divided to base or forming a very small tube, not provided by an inner membrane. Corolla campanulate, blue, purple, violet or pink, rarely white, plicae or subsidiary lobes of corolla absent, fimbriae absent or throat naked. Stamens corresponding the number of petals. Anthers strictly basifixed, sagittate, dark coloured, filaments inserted near sinuses of corolla lobes and provided with papillae or hairs at base. Nectaries usually present in pairs at the base of and alternating with petals.

Ovary superior, unilocular, with parietal placentation and fewer ovules, stigmas 2, with elongated projections, subsessile-sessile. Capsule ovoid or cylindric, stipitate, few seeded, dehiscing septicidally into two halves. Seeds light brown, slightly bigger in size, globose-ovoid, slightly reticulate.

A genus of 3 species, distributed in Himalayas. Represented in Pakistan by 3 species. The genus is related to the preceeding genus Kurramiana Omer et al. The detailed generic affinities are discussed under Kurramiana Omer and Qaiser.

1 Stamens inserted below the middle. Seeds numerous. Stem fasciculately branched from base. Small annual herb up to 10 cm high   1 Jaeschkea microsperma
+ Stamens inserted near sinuses. Seeds fewer. Stem not fasciculately branched from base. Annual to perennial herbs   (2)
2 (1) Clayx lobes ± equal in length, ovate-broadly ovate. Habit stout   2 Jaeschkea canaliculata
+ Calyx lobes distinctly unequal, lanceolate. Habit weak   3 Jaeschkea oligosperma

Lower Taxa

Related Synonym(s):


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