Directory       News       Site Map       Home
         
    Jepson eFlora
Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

TUCTORIA

John R. Reeder


Annual, ± hairy. Stem: ascending to erect, unbranched, often fragile, easily breaking apart at nodes. Leaf: basal and cauline; collar 0; sheath and blade continuous; blade flat or becoming inrolled when dry. Inflorescence: spike-like, partly enclosed by upper sheath or exserted with age; spikelets spirally arranged on axis. Spikelet: laterally compressed; glumes entire or irregularly short-toothed; florets 5–40, tardily breaking above glumes and between florets; lemma entire or minutely toothed, generally with central sharp point, 11–17-veined; palea ± = lemma; anthers exserted, filaments slender, ribbon-like; stigmas 1/3–1/2 style length, sparsely short-hairy. Fruit: obovoid or oblong.
3 species: California, southern Baja California. (Anagram of Orcuttia) [Reeder 2003 FNANM 25:293–294]
Unabridged references: [Reeder 1982 Amer J Bot 69:1082–1095]

Key to Tuctoria

1. Inflorescence exserted from upper leaf sheath; lemma tip ± truncate; fruit 2 mm, minutely wrinkled ..... T. greenei

1' Inflorescence partly enclosed by upper leaf sheath; lemma tapered gradually, tip sharp-pointed; fruit 3 mm, smooth ..... T. mucronata

Contact/Feedback

Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.