Arabis Sp. - Rockcress

Family: Mustard - Brassicaceae ^[E-flora]

1. Arabis alpina 2. Arabis hirsuta [1]

Arabis holboellii [2]

Arabis lyrata [3]

• "Annual, biennial, perennial herb; base not woody; hairs simple, forked, or stellate; caudex branched or not."
• "Stem: branched or not, leafy."
• "Leaf: basal rosetted, petioled, entire or dentate; cauline sessile, entire or dentate, base lobed or not."
• "Flower: sepals erect or ascending, base of lateral pair sac-like or not; petals spoon-shaped to oblong, oblanceolate, or obovate, white to pink or deep purple."
• "Fruit: silique, erect to spreading, linear, dehiscent, unsegmented, straight, flat parallel to septum, glabrous."
• "Seed: 12–110, 1 row per chamber, flat, winged or margined." ^[Jepson]

"< 70 species: temperate North America, Eurasia, northern Africa. (Latin: of Arabia) Most species of Arabis in TJM (1993) moved to Boechera; Arabis glabra to Turritis. California record of Arabis aculeolata Greene not confirmed." ^[Jepson]

Arabis holboellii and lyrata now in Boechera ^[E-flora]

Local Species;

1. Arabis eschscholtziana - Eschscholtz's rockcress ^[E-flora]
2. Arabis holboellii - Holboell's rockcress ^[E-flora]
3. Arabis lyrata - lyre-leaved rockcress ^[E-flora]
4. Arabis nuttallii - Nuttall's rockcress ^[E-flora]

References

• [Jepson] Ihsan A. Al-Shehbaz, except as noted, 2012. Arabis, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=13775, accessed on Mar 10 2014

Images

• [1] Johann Georg Sturm (Painter: Jacob Sturm), Public domain, via Wikimedia Commons
• [2] Stan Shebs, CC BY-SA 3.0, via Wikimedia Commons
• [3] Joshua Mayer, CC BY-SA 2.0, via Wikimedia Commons

Arabis eschscholtziana - Eschscholtz's rockcress

"General: Biennial or short-lived perennial herb usually from an unbranched stem-base; stems 1-few, 20-80 cm tall, stiff-hairy basally, glabrous above." ^{[IFBC-E-flora]}

"Notes: Often included in A. hirsuta, as the coastal form of that species." ^{[IFBC-E-flora]}

Habitat/Range: "Moist to mesic meadows, streambanks, rocky slopes and disturbed areas in the lowland to alpine zones; frequent in BC in and W of the Coast-Cascade Mountains; N to AK and YT and S to W ID and OR." ^{[IFBC-E-flora]}

Status: Native ^[E-flora]

Synonyms

• Arabis hirsuta subsp. eschscholtziana (Andrz.) Hultén .
• Arabis hirsuta var. eschscholtziana (Andrz.) Rollins . ^[E-flora]

References

• [E-flora] https://linnet.geog.ubc.ca/Atlas/Atlas.aspx?sciname=Arabis%20eschscholtziana&redblue=Both&lifeform=7, Accessed August 12, 2020

Arabis holboellii - Holboell's rockcress

"General: Biennial or short-lived perennial herb from a simple or branched stem-base; stems 1-several, simple or branched, 0.1-1.0 m tall, hairy basally, usually glabrous above." ^{[IFBC-E-flora]}

Habitat / Range: "Mesic to dry rocky slopes, gravelly areas, shrublands and grasslands in the steppe to alpine zones; var. pinetorum rare in S BC, var. secunda infrequent in C and S BC east of the Coast-Cascade Mountains, var. retrofracta common throughout BC east of the Coast-Cascade Mountains (probably introduced on the coast), var. consanguinea infrequent throughout BC east of the Coast-Cascade Mountains; N to AK, YT and NT, E to PQ and ON and S to ND, SD, WY, UT, NV and CA; Greenland." ^{[IFBC-E-flora]}

Status: Native ^[E-flora]

Synonyms

• Boechera holboellii (Hornem.) Á.Löve & D.Löve . ^[E-flora]
• Arabis holboellii var. retrofracta (Graham) Rydb. ^[E-flora]

References

1. [E-flora] https://linnet.geog.ubc.ca/Atlas/Atlas.aspx?sciname=Boechera%20retrofracta, Accessed August 13, 2020

Arabis lyrata - lyre-leaved rockcress

Subspecies Present in B.C.

• Arabidopsis lyrata ssp. kamchatica " ^[E-flora]

"Arabis lyrata is a BIENNIAL/PERENNIAL growing to 0.3 m (1ft).
It is hardy to zone (UK) 5 and is not frost tender. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees, Lepidoptera (Moths & Butterflies).
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It prefers dry or moist soil." ^[PFAF]

"General: Biennial or short-lived perennial from a simple or branched stem-base; stems 1-several, simple or branched, 10-30 cm tall, glabrous throughout or sparsely stiff-hairy near base." ^{[IFBC-E-flora]}

Habitat / Range: "Gravel slopes and waste places in the lowland zone; rare in C and SW BC; probably introduced from E North America." ^{[IFBC-E-flora]}

Status: Native ^[E-flora]

Synonyms

• Arabidopsis lyrata ^[Wiki2]
• Arabis lyrata L. ^[E-flora]

Edible Uses

• Young Leaves
  • Spring. Raw or cooked by Alaska peoples. [????]
  • "Young leaves - raw or cooked[177]. Rosettes of the lobed leaves are added to tossed salads or served as a green vegetable[257]." ^[PFAF]

References

1. [E-flora] https://linnet.geog.ubc.ca/Atlas/Atlas.aspx?sciname=Arabidopsis%20lyrata, Accessed August 13, 2020
2. [PFAF] https://pfaf.org/user/Plant.aspx?LatinName=Arabis+lyrata, Accessed August 14, 2020
3. [Wiki2] Arabis lyrata, http://en.wikipedia.org/wiki/Arabidopsis_lyrata, Accessed Jan 16, 2014

Arabis nuttallii - Nuttall's rockcress

"General: Perennial herb from a simple stem-base; stems simple, one to several, 10-30 cm tall, with long, simple or 2-branched hairs at the bases, becoming glabrous above." ^{[IFBC-E-flora]}

Habitat / Range: "Moist to mesic meadows, talus slopes, rock outcrops, open forests and roadsides in the montane to alpine zones; infrequent in SE BC; N to YT, E to SW AB and S to WY, UT and NV." ^{[IFBC-E-flora]}

Status: Native ^[E-flora]

Synonyms:

• Arabis bridgeri M.E. Jones
  
• Arabis macella Piper
  
• Boechera nuttallii (B.L. Rob.) Dorn ^[E-flora]

References

• [E-flora] https://linnet.geog.ubc.ca/Atlas/Atlas.aspx?sciname=Arabis%20nuttallii&redblue=Both&lifeform=7, Accessed August 13, 2020