Home Flora of Pakistan
Name Search
District Map
Grid Map
Inventory Project
!Swertia L. Search in The Plant ListSearch in IPNISearch in Australian Plant Name IndexSearch in Index Nominum Genericorum (ING)Search in NYBG Virtual HerbariumSearch in JSTOR Plant ScienceSearch in SEINetSearch in African Plants Database at Geneva Botanical GardenAfrican Plants, Senckenberg Photo GallerySearch in Flora do Brasil 2020Search in Reflora - Virtual HerbariumSearch in Living Collections Decrease font Increase font Restore font

Published In: Species Plantarum 1: 226. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
Contributor Text: J. Shah,
Contributor Institution: Islamia College, Peshawar, Pakistan
General/Distribution: A genus of c. 148 species.
Comment/Acknowledgements: Almost cosmopolitan but not in South America, Australia, Greenland, Iceland, Britain.


Export To PDF Export To Word
Annual, biennial or perennial herbs ranging from 2-180 cm. Stem branched or not, cylindrical, lineolate, angular or quadrangular, winged or not, glabrous or pubescent. Basal leaves rosulate or not, elliptic-spathulate to spathulate, oblong to lincar-oblong or obovate to cuneate, obtuse, acute or apiculate, glabrous, glaucous or pubescent, margin entire or rarely lacinulate. Cauline leaves whorled, opposite or alternate, free or connate, variable shape and texture l ike the basal leaves. Inflorescence paniculate, cymose, corymbose, solitary. Flowers pedicellate, bracteate, bracteolate, tetramerous pentmmrous, complete, bisexual, actinomorphic or slightly zygomorphic to un-equal calyx lobes. Calyx free or connate at the base rarely subpanulate or campanulate, lobes linear to narrowly ovate, obovate, spathulate to sub-spathulate, acute or obtuse, glabrous-pubescent, entire rarely ulate. Corolla white to bluish-white, pale green or dirty green, yellow, rarely reddish, rotate, rarely sub-campanulate to campanulate, lobes narrowly ovate to ovate or elliptic-oblong to ovate-oblong cuneate or obovate, acute, acuminate, caudate, apiculate, mucronate or obtuse. Glands vary in shape, fimbriate or not, 1 or 2 per corolla segment. Stamens epipetalous, free rarely connate at the base, filaments filiform, subulate, flattened, glabrous or pubescent, anthers ovate to oblong-ovate, obtuse rarely apiculate. Ovary bicarpellary syncarpous, placentation parietal, style absent or present, vary from linear-oblong to sub-oblong or orbicular to sub-orbicular. Fruit a capsule. Seeds vary from warted to annular winged to polyhedral winged, flat, rounded, ovoid or oblong.

Export To PDF Export To Word Export To SDD
Switch to indented key format
1 Plants perennial. Cauline leaves opposite, more or less connate (2)
+ Plants annual or biennial, cauline leaves opposite but not connate (5)
2 (1) Seeds corrugate cristate (3)
+ Seeds annular winged (4)
3 (2) Flowers tetramerous. Gland one per corolla lobe, saccate, fimbriate
+ Flowers pentamerous. Glands two per corolla lobe, saccate, fimbriate 3 Swertia petiolata
4 (2) Corolla lobes ovate. Tube formed by the connation of the cauline leaves around the internode 1-5 mm
+ Corolla lobes elliptic-oblong to oblong. Tube formed by the connation of the cauline leaves around the internode 1-3 cm long 1 Swertia speciosa
5 (1) Cauline leaves cordate-ovate (6)
+ Cauline leaves linear to narrowly ovate (7)
6 (5) Gland one per corolla lobe, naked 10 Swertia cordata
+ Gland one per corolla lobe, pocket-shaped, with compound fimbriae 9 Swertia alata
7 (5) Gland one per corolla lobe (8)
+ Glands two per corolla lobe 5 Swertia tetragona
8 (7) Gland horse-shoe shaped (9)
+ Gland pocket-shaped, fimbriae compound 8 Swertia angustifolia
9 (8) Stamens with flattened filaments, fused with each other at the base of corolla 7 Swertia ciliata
+ Stamens with flattened filaments but not fused with corolla 6 Swertia paniculata
© 2023 Missouri Botanical Garden - 4344 Shaw Boulevard - Saint Louis, Missouri 63110