Onobrychis argaea Boiss. & Balansa, 1859

Atasagun, Bayram, Aksoy, Ahmet & Martin, Esra, 2024, Notes on the Morphology, Anatomy, Palynology, and Karyology of Onobrychis argaea (Fabaceae), Endemic to Turkey, Phytotaxa 665 (2), pp. 145-156 : 147

Onobrychis argaea Boiss. & Balansa

Description:—Perennial herbaceous plants with many stems from the root. Stem woody at base, ascendens-erect, 4–34 cm. Stipules 4.6–12.3 × 1.7–3.2 mm, scarious, connate at the base, yellowish, lanceolate, free at apex. Leaves 1–10.2 cm long, imparipinnate; 4–6 pairs of leaflets; petiole corrugated above, white hairy. Leaflets 2.8–9.5 × 1.4–3.1 mm, entire-margined, linear or linear-oblong, apex mucronulate, densely or sparsely covered on both surfaces with adpressed pilose hairs. Inflorescence axillary, densely ovate raceme, 10–39-flowered, not expanding in fruit. Bracts membranous, persistent, 1.7–3.2 × 0.4–0.8 mm long, subulate, sparsely obliquely pilose, ciliate. Bracteoles membranous, filiform, usually on sepal tube. Calyx 3.8–6.1 × 1.4–2.3 mm, tubular, lower part of tube swollen outward, with unequal teeth; teeth 1.8–3.7 mm, narrowly linear or subulate, reddish or dark brownish towards the apex, with spreading pilose. Corolla rose, darkly striped; standard 6.1–8.1 mm ovate or broadly elliptic, emerginate; wings 2.3–3.1 mm, auriculate, apex obtuse or acute, keel 5.2–7.2 mm, blade obovate. Stamens diadelfus, membranous, 6.3–9.9 mm long. Pistil 6.5– 10.4 mm; ovary with 1 ovule, sessile, densely white hairy above; style weak, glabrous. Fruit one-seeded, indehiscent, 4.6–7 × 4.7–6.8 mm, densely pilose, with 2 rows of disc with reticulate surface in the center, with hard hooked spines on the disc, margin with straight spines, 5–9 teethed ( Fig. 1 ).

Flowering: July–August. Fruiting: August. Altitudinal range: 2236–2940 m a.s.l.

Figures

FIGURE 1. O. argaea A. Habit. B. Stipule. C. Leaflet. D. Bract. E. Calyx. F. Standard. G. Wings. H. Keel. I. Pistil and Stamens. J. Fruit.