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This species is accepted, and its native range is W. Central California.
A specimen from Kew's Herbarium

[GB]
Morphology General Habit
Annual; caespitose. Culms geniculately ascending, or decumbent; 6-12 cm long; disarticulating at the nodes. Culm-internodes solid. Leaves without demarcation between sheath and blade. Leaf-sheaths viscid. Ligule absent. Leaf-blades involute; 2-4 cm long; 1-2 mm wide; viscid; aromatic. Leaf-blade surface pubescent, or pilose.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes; embraced at base by subtending leaf. Racemes 1; single; multilateral; 1.5-6 cm long. Rhachis angular. Spikelet packing broadside to rhachis. Spikelets solitary. Fertile spikelets sessile.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 10-12 mm long; breaking up at maturity; disarticulating below each fertile floret.
Fertile
Spikelets comprising 5-10 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 10-12 mm long; breaking up at maturity; disarticulating below each fertile floret.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet. Lower glume ovate; 4-7 mm long; 1 length of upper glume; chartaceous; without keels; 7 -veined. Lower glume apex entire, or with a unilateral tooth, or dentate; 1-2 -fid; acute; mucronate. Upper glume oblong; 4-7 mm long; 1 length of adjacent fertile lemma; chartaceous; without keels; 7-9 -veined. Upper glume apex entire, or with a unilateral tooth, or dentate; 1-2 -fid; acute; mucronate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 5-7 mm long; chartaceous; keeled; 11-15 -veined. Lemma lateral veins ribbed. Lemma surface scaberulous; rough on veins. Lemma apex erose; acute; mucronate. Palea 1 length of lemma; 2 -veined. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Lodicules 2; adnate to palea; cuneate; 0.5 mm long; fleshy; truncate. Anthers 3; 3 mm long; yellow. Stigmas 2; sparsely hairy.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; oblong; laterally compressed; 3 mm long; dark brown; smooth. Embryo 0.75 length of caryopsis.
Distribution
North America: southwest USA.
Reference
Orcuttieae. Reeder.

Native to:

California

Tuctoria mucronata (Crampton) Reeder appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Crampton, B. [5057], USA K000912315 isotype

First published in Amer. J. Bot. 69: 1091 (1982)

Accepted by

  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.
  • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

Literature

Kew Backbone Distributions

  • Flora of North America Editorial Committee (2003). Flora of North America North of Mexico 25: 1-781. Oxford University Press, New York, Oxford.

GrassBase - The Online World Grass Flora
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0