Perilla L.

First published in Gen. Pl. ed. 6.: 578 (1764)
This genus is accepted
The native range of this genus is Subtropical Asia.

Descriptions

Harley, R.M. et al. (2004). Labiatae, in The Families and Genera of Vascular Plants (K. Kubitzki, ed. in chief) VI: 167-275. Springer-Verlag, Berlin, Heidelberg, New York.

Morphology General Habit
Robust annual herbs, strongly aromatic
Morphology Leaves
Leaves toothed, long-petiolate, in cultivated forms often deep purple-tinged or laciniate
Morphology Reproductive morphology Inflorescences
Inflorescence raceme-like, lax or congested, ± secund, of 2(-4)-flowered verticillasters
Morphology Reproductive morphology Inflorescences Bracts
Bracts small, often broadly ovate-acuminate
Morphology Reproductive morphology Inflorescences Bracteoles
Bracteoles absent
Morphology Reproductive morphology Flowers
Flowers small, distinctly pedicellate
Morphology Reproductive morphology Flowers Calyx
Calyx campanulate, lobes triangular, posterior lip shorter with median lobe shortest, tube densely hairy outside, annulate within throat, calyx strongly accrescent in fruit, with base of tube strongly distended and gibbous, calyx-lobes becoming slightly u
Morphology Reproductive morphology Flowers Corolla
Corolla small, white to purplish, weakly 2-lipped, lobes subequal, corolla-tube very short, included in calyx, annulate at insertion of stamens
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens 4, subequal, divergent, shorter than or equalling corolla, thecae separate, parallel, becoming slightly divergent, connective distinct
Morphology Reproductive morphology Flowers Gynoecium Style
Style short
Morphology Reproductive morphology Fruits
Nutlets 4, subglobose, glabrous, distinctly reticulate
Note
2n = 20, 40.  One variable species: P. frutescens (L.) Britton
Distribution
Pobably native in the Himalayan foothills, from Pakistan eastwards, but cultivated and occurring as a casual in Southeastern Asia to China and Japan.
Ecology
In shady areas
[LKGF]

Sources

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2022. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2022. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0
  • Lamiaceae Key Genus Fact Sheets

    • Nina Davies, Gemma Bramley and Don Kirkup, Royal Botanic Gardens, Kew
    • http://creativecommons.org/licenses/by/3.0