• Reset your password

Main navigation

  • Home
  • About
    • Methodology
    • A Brief History of PRE
    • Funding and Support
  • Evaluations
  • Plants
  • Organizations
  • Community
  • Projects

User account menu

  • Log in
PRE — Plant Risk Evaluator

Bothriochloa ischaemum

Common Name(s)
Yellow bluestem, King Ranch bluestem, Old world bluestem
Synonym(s)
Bothriochloa ischaemum var. songarica, Andropogon ischaemum, Andropogon ischaemum var. songaricus, Amphilophis ischaemum

Is this plant a cultivar?  No

Life History:  Perennial

Growth Form:  grass

Africa, Asia, Europe

Perennial, tussocky from a branching rootstock. Culms slender, erect or geniculately ascending, 25–70 cm tall, 3–6-noded, nodes glabrous or appressed bearded. Leaf sheaths keeled, congested at plant base; leaf blades linear, 5–16 × 0.2–0.3 cm, usually sparingly hairy with tubercle-based hairs, apex acuminate; ligule ca. 1 mm. Inflorescence composed of 5–15 racemes, subdigitate or inserted on a brief axis; racemes 3–7 cm, silvery-green or tinged purplish brown; rachis internodes and pedicels ciliate with long white or pinkish silky hairs. Sessile spikelet 4–5 mm; lower glume oblong-lanceolate, usually cartilaginous, sometimes herbaceous, back flat to slightly concave, 5–7-veined, silky-pilose below middle, lacking a pit, margins keeled and stiffly ciliate near apex; awn of upper lemma 1–1.5 cm. Pedicelled spikelet male or barren, subequal to sessile spikelet, glabrous. Fl. and fr. autumn. 2n = 40, 50, 60.

External Resources
GBIF Species Page
USDA Plants Database page
Tropicos Species Page
US National Germplasm Database
These links will open new browser tabs.

Copyright © 2025 PRETool.org - All rights reserved