Flora of North America species comparison

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Hesperis

dame's-rocket, dame's-violet, rocket
Habit Plants with caudex; not scapose; pubescent or glabrous, trichomes simple and/or forked, often mixed with unicellular glands on uniseriate stalks.
Stems

erect, unbranched or branched.
Leaves

basal and cauline;

petiolate [sessile];

basal rosulate [not rosulate], blade margins entire, dentate, or pinnatifid;

cauline similar to basal.
Racemes

(corymbose), considerably elongated in fruit.
Flowers

sepals oblong [linear], (sometimes connivent), lateral pair strongly saccate basally, (pubescent or glabrous);

petals obovate [oblong], (much longer than sepals), claw distinctly differentiated from blade, (apex rounded [obtuse]);

stamens strongly tetradynamous;

filaments (erect), slender or dilated basally;

anthers linear [oblong], (apex obtuse);

nectar glands (2), lateral, annular or lunar.
Fruiting pedicels

divaricate or ascending [reflexed], slender or stout.
Fruits

tardily dehiscent, sessile, linear, torulose;

valves each with prominent midvein, glabrous;

replum rounded;

septum complete;

ovules 4–40 per ovary;

style obsolete or distinct (relatively short);

stigma conical (lobes prominent, connivent or distinct, decurrent).
Seeds

plump, not winged, oblong;

seed coat (reticulate), not mucilaginous when wetted;

cotyledons incumbent.

Hesperis
Distribution
from USDA
se Europe; c Asia; sw Asia; n Africa [Introduced in North America; introduced also in South America (Argentina, Chile)]
[BONAP county map]
Discussion

Species 25 (1 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 562. Author: Ihsan A. Al-Shehbaz.
Parent taxa Brassicaceae > tribe Hesperideae
Subordinate taxa
H. matronalis
Name authority Linnaeus: Sp. Pl. 2: 663. (1753): Gen. Pl. ed. 5, 297. (1754)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

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