Derris mioscandens

Name

Derris mioscandens

Rank

Species

Generic Name

[Genus] Derris

Authors (Pub.)

Prasad M. Alok Kannaujia A. K. Kumar S. Singh S. K.  

Publication

Middle Miocene flora from Siwalik foreland basin of Uttarakhand, India and its phytogeographic and palaeoclimatic implications [2017]

Journal

Palaeobotanist

Volume

60

Issue

1–2

Page number

272

Year

2017

Fossil Status

leaves

Stratigraphy

Miocene

Strat. comment

Lower Siwalik Formation

Location

Spot No. 10 (29º9'12.1": 80º11'38.5"), Bhairauv Mandir, Purniyagiri Road section, Tanakpur, Champawat District, Uttarakhand, India

Paleoregion

Eurasia (Indostan)

Data for Holotypus

Repository

Birbal Sahni Institute of Palaeosciences, Lucknow, India

Repository Number

BSIP Museum No. 41346

Num

Pl. 15: 7, 9

Pub.

Middle Miocene flora from Siwalik foreland basin of Uttarakhand, India and its phytogeographic and palaeoclimatic implications [2017]

Diagnosis

Leaf symmetrical, narrow elliptic; preserved size 4.4 x1.2 cm; apex acute, base mainly obtuse; margin entire; texture thick chartaceous; venation pinnate, eucamptodromous; primary vein (1º) single, prominent, stout, almost straight; secondary veins (2º) about 12 pairs visible, 0.3 to 0.6 cm apart, closely placed, angle of divergence about 60º, acute moderate, uniformly curved up, seemingly unbranched; intersecondary veins present, simple, frequent; tertiary veins (3º) fine, poorly preserved, angle of origin usually AO, percurrent, straight to sinuous, branched, oblique is relation to midvein, alternate to opposite and close.