clubrush

(clubrushes)
genus Bolboschoenus

Member of sedges (family Cyperaceae)
grasses, sedges, cattails, and allies (order Poales)
monocots (class Liliopsida)
cream, other colors in flowering plants

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

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Plant is tipped with a cluster of spikelets, subtended by long leaves. Each spikelet has multiple interweaved flowers, the structure of which is unclear to me. Each flower has 3 stamens and 1 style with 2 or 3 stigmas.

saltmarsh bulrush
Bolboschoenus maritimus ssp. paludosus

• 2 stigmas per flower
• fruit 2-sided
• anthers yellow

seacoast bulrush
Bolboschoenus robustus

• 3 stigmas per flower
• fruit flat-3-sided or 2-sided
• anthers orange

river bulrush
Bolboschoenus fluviatilis

• 3 stigmas per flower
• fruit strongly 3-sided
• anthers yellow

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1 observed taxon / 2 unobserved taxons / 1 key

Chris’s observations: 2 (none are research grade)

Locations:

• Coyote Hills RP: 2

Months:

• Apr.: 1
• May: 0
• Jun.: 0
• Jul.: 1

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Taxon info: iNaturalist – Calflora – Jepson eFlora – FNA

Bay Area species: iNaturalist – Calflora