Flora of North America species comparison

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Braya longii

long's northern rockcress
Habit Plants scapose; sparsely pubescent, trichomes simple and 2-forked.
Stems

simple or few to several from base, erect, (unbranched), 0.3–1.1(–1.5) dm.
Basal leaves

blade narrowly spatulate to oblanceolate, (0.5–)1–3(–5) cm × 1–3.5 mm, base (membranous), broadly expanded near point of attachment, margins entire, (sparsely ciliate proximally), apex obtuse.
Cauline leaves

0 or 1 (or a leaflike bract subtending proximalmost pedicel).
Flowers

sepals 2–3(–3.5) × (1.1–)1.2–1.7 mm;

petals white (or claw purplish), (3–)3.3–4.8(–5) × (1.2–)1.4–2.5(–3) mm, (claw and blade usually well-differentiated, apex rounded);

filaments 1.7–2 mm;

anthers oblong, 0.3–0.4 mm.
Fruiting pedicels

erect or ascending, (1.2–)1.5–4.5(–4.9) mm.
Fruits

lanceoloid-subulate, not torulose, (straight), (0.3–)0.4–0.8(–1) cm × (0.7–)1–1.5(–1.7) mm;

valves glabrous or, sometimes, sparsely pubescent;

septum margin broadly expanded basally (forming sacklike pouch around proximalmost seed in each locule);

ovules 10–16 per ovary;

style 0.5–1(–1.2) mm;

stigma 2-lobed or entire.
Seeds

somewhat uniseriate, oblong, 1–1.4 × 0.5–0.9(–1) mm.
2n

= 56.

Braya longii
Phenology Flowering Jun–Jul.
Habitat Limestone barrens
Elevation 0-60 m (0-200 ft)
Distribution
from FNA
NF
[BONAP county map]
Discussion

Of conservation concern.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 7, p. 551.
Parent taxa Brassicaceae > tribe Euclidieae > Braya
Sibling taxa
B. fernaldii, B. glabella, B. humilis, B. linearis, B. pilosa, B. thorild-wulffii
Synonyms B. purpurascens var. longii
Name authority Fernald: Rhodora 28: 202. (1926)
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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