Pennellia
Brassicaceae tribe Halimolobeae
mock thelypody
erect [ascending], often branched distally.
basal and cauline;
petiolate or sessile;
basal (withered with age), rosulate, petiolate, blade margins entire, dentate to sinuate, or runcinate;
cauline subsessile or sessile [shortly petiolate], blade margins entire [dentate to sinuate].
petiolate or sessile;
blade base not auriculate [auriculate], margins entire, dentate, or lobed.
stalked to subsessile, forked, stellate, or dendritic [simple].
(several-flowered, sometimes secund, lax), considerably elongated in fruit.
ebracteate, elongated [not elongated] in fruit.
(usually actinomorphic, rarely zygomorphic, cup-shaped);
sepals erect, oblong to ovate, lateral pair slightly to strongly saccate basally, (usually pubescent, rarely glabrous);
petals white (lavender or purple apically), spatulate to oblanceolate, (± longer than sepals), claw undifferentiated from blade, (apex obtuse);
stamens slightly tetradynamous;
filaments dilated basally;
anthers ovate to oblong, (apex obtuse);
nectar glands confluent, subtending bases of stamens.
usually actinomorphic, rarely zygomorphic;
sepals spreading or erect [ascending], lateral pair seldom saccate basally;
petals white, lavender, or purple [pink], claw present, obscure [distinct];
filaments unappendaged, not winged;
pollen 3-colpate.
erect, descending, ascending, or divaricate-ascending, slender, (glabrous).
siliques, sessile or shortly stipitate, linear, not torulose, straight or curved, terete or latiseptate;
valves each with prominent or obscure midvein, glabrous or pubescent;
replum rounded;
septum complete;
ovules 40–250 per ovary;
style distinct or obsolete;
stigma capitate.
silicles or siliques, dehiscent, unsegmented, terete, latiseptate, or angustiseptate;
ovules [4–]16–250[–numerous] per ovary;
style distinct or obscure;
stigma entire.
uniseriate or biseriate, plump or flattened, winged or not, oblong to ovate;
seed coat (reticulate-areolate), mucilaginous or not when wetted;
cotyledons accumbent or incumbent.
biseriate or uniseriate;
cotyledons accumbent or incumbent.
= 8.
Pennellia
Brassicaceae tribe Halimolobeae
Species 8 (3 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Genera 5, species 39 (2 genera, 6 species in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Fruits strongly latiseptate, 2-2.5 mm wide; seeds 2.4-2.8 mm, winged (broadly); septums opaque; ovules 40-50 per ovary; cotyledons accumbent. | P. tricornuta |
1. Fruits terete or slightly latiseptate, 0.6-1.8 mm wide; seeds 0.7-1.3 mm, not winged; septums transparent; ovules 90-250 per ovary; cotyledons incumbent | → 2 |
2. Racemes not secund; fruiting pedicels straight, erect or ascending; fruits (1.5-)2.2-5.8 cm, terete; ovules 90-140 per ovary; sepals 2.7-4 mm; petals 1.5-4(-5) mm. | P. micrantha |
2. Racemes secund; fruiting pedicels arcuate, reflexed; fruits 5-10 cm, latiseptate; ovules 150-250 per ovary; sepals 4-9 mm; petals (4-)5-7(-12) mm. | P. longifolia |
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