genus Hosackia

Member of legume family (family Fabaceae)
dicots (class Magnoliopsida)
flowering plants (subphylum Angiospermae)

There are no other wild species of this genus in the bay area.

big deervetch
Hosackia crassifolia

big deervetch
Hosackia crassifolia

peduncle bract generally well below umbel or missing
stipules scarious, fragile, not leaflet-like

balsam bird’s foot trefoil
Hosackia stipularis var. stipularis

balsam bird’s foot trefoil
Hosackia stipularis var. stipularis

peduncle bract generally well below umbel or missing
stipules often wide, leaflet-like

witch’s-teeth
Hosackia gracilis

witch’s-teeth
Hosackia gracilis

peduncle bract just below umbel or missing
plant ± glabrous
petal claw exserted from calyx tube
corolla wings pink-purple, fading white
generally 3-parted bracts

pinnate lotus
Hosackia pinnata

peduncle bract just below umbel or missing
plant ± glabrous
corolla wings white
no bracts or simple bracts
petal claw exserted from calyx tube

streambank bird’s-foot trefoil
Hosackia oblongifolia

streambank bird’s-foot trefoil
Hosackia oblongifolia

peduncle bract just below umbel or missing
plant often hairy
petal claw included or barely exserted from calyx tube
vanishingly rare in the bay area

4 observed taxons / 1 unobserved taxon / 1 key

Chris’s observations: 4 (3 are research grade)

Locations:

Desolation Wilderness
El Corte de Madera OSP
Stevens Creek CP
UCSC Campus Natural Reserve

Months:

May: 2
Jun.: 0
Jul.: 0
Aug.: 2

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Not all sites include this taxon:

genus Hosackia → iNaturalist – Calflora – Jepson eFlora
not yet listed → FNA

Bay Area species: iNaturalist – Calflora