Tuctoria mucronata

Crampton's tuctoria, solano grass, Solano Grass

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Family: Poaceae · Type: Grass · Native

Conservation status: CNPS 1B.1 · Endangered

Tuctoria mucronata (Crampton's tuctoria) is a native California grass in the Poaceae family, recognized by . Key features: yellow anthers drying pinkish, sharp-pointed lemmas.

Crampton's tuctoria is a rare (CNPS 1B.1) California native annual found in the southwestern Sacramento Valley in Solano and Yolo counties, inhabiting vernal pools and grasslands at elevations below 10 meters. Flowering from April to August, this delicate grass produces small, subtly detailed spikelets with yellow anthers that dry to a pinkish hue. Growing with ascending stems that become decumbent, reaching less than 12 centimeters tall, the plant has distinctive curved leaves that roll outward and taper to fine points 2 to 4 centimeters long. Its leaves and inflorescences are notably slender, with spikelets crowded into compact structures 1.5 to 6 centimeters long and featuring glumes 4 to 7 millimeters long. The fruit is laterally flattened and widely oblong, contributing to this rare grass's unique morphology in California's ephemeral wetland ecosystems.

Sources: Jepson eFlora · CNPS Rare Plant Inventory · Index of California Plant Names · CalPhotos · CDFW CNDDB

Last updated 2026-10-07

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Cal-IPC, and more.