Limonium lagostanum Bogdanović & Brullo, 2015

Bogdanović, Sandro & Brullo, Salvatore, 2015, Taxonomic revision of the Limonium cancellatum group (Plumbaginaceae) in Croatia, Phytotaxa 215 (1), pp. 448-450 : 448-450

10. Limonium lagostanum Bogdanović & Brullo , sp. nov.

Type: — CROATIA. Southern Dalmatia: Isola di Lastovo, Skrivena luka, Sud Dalmazia , 28 July 2006, Bogdanović s.n. (holotype CAT!; isotypes CAT!, ZAGR!) ( Figs. 11 , 40 ) .

Diagnosis: — Planta pubescens , densis rosulis foliorum apice caudicularum, foliis rugosis, spathulatis, retusis apice, revolutis margine, 1-nerviis, scapis numerosis, erectis ad adscendentibus, ramis sterilibus numerosis, inflorescentia reticulata, ramosa, spicis rectis ad curvatis, bractea inferiore ovata, obtusa dense pubescente, bractea superiore obovato-subrotundata, late obtusa, calice tubo dense piloso, lobis ovato-triangularis, subobtusis.

Description: —Plant perennial, 15–35 cm tall, pubescent, (hairs 0.1–0.15 mm long), with robust tap-root. Caudices branched, 2–5 cm long, with dense leaf rosettes at the apex. Leaves rigid, rugose, pubescent, green, 13–35 mm long, 2–7 mm wide, spathulate, retuse, revolute at the margin, 1-nerved, gradually tapering into a long petiole. Stems numerous, erect to ascending, rugose, with numerous sterile branches, flexuous, fragile at nodes, very branched, diverging at the angle of 60–180°, internodes 4–16 mm long, right to curved. Inflorescence

18 • Phytotaxa 215 (1) © 2015 Magnolia Press

BOGDANOVIĆ & BRULLO reticulate, branched from the base; spikes 8–25 mm long, straight to curved. Spikelets 5–5.5 mm long, 2–flowered, 4–6 per cm; outer bract 1.5–1.7 mm long, 1.4–1.6 mm wide, ovate, obtuse, with margin narrowly membranous, glabrous and central part fleshy, acuminate, densely hairy; middle bract 1.6–1.7 mm long, 1.3–1.5 mm wide, ovate, rounded at the apex, membranous, hairy on the veins; inner bract 3.2–3.5 mm long, 2.7–2.9 mm wide, obovate-subrounded, widely obtuse, margin membranous, glabrous, 0.3–0.5 mm wide, with central part fleshy, 1.8–2 mm wide, densely hairy, apiculate, forming a triangular tip, 0.4–0.5 mm long, no reaching the upper margin. Calyx 3.7–4.3 mm long, exserted 1–1.5 mm from the inner bract, tube densely hairy, with 5 totally hairy ribs, reaching almost the upper part of the lobes; calyx lobes 0.5–0.9 × 0.6–0.7 mm, triangular-ovate, glabrous, subobtuse. Corolla lilac.

Etymology: —From “Lagosta” the old name of Lastovo island.

Distribution and ecology: —This species is exclusive of the island of Lastovo and some neighbouring islets (Kopište and Bijelac), where it is very rare ( Fig. 29M ). It grows in the narrow belt between the shoreline and the pinewoods, forming halophilous communities.

Additional specimens examined (Paratypes): — CROATIA. Southern Dalmatia: Insel Lagosta, Strand bei Porto rosso unterhalb d. geschlossenen Vegetation , 28 August 1914, Ginzberger s.n. (W!); Scoglien westl. v. Lagosta: Bielac, 26 July 1914, Ginzberger s.n. (W!); Souther Dalmatia, on the rock „Bielac“ near the island of Lagosta (Nr. 22 on the map), 26 July 1914, Ginzberger s.n. (K!); Dalmazia, Isola di Kopište , vicino a Lastovo, 29 July 2006, BogdanoviĆ s.n. ( CAT!, ZAGR!) .

Figures

FIGURE 11. Limonium lagostanum. A. Inflorescence branches. B. Spikelets. C. Outer bracts. D. Middle bracts. E. Inner bracts (dorsal view). F. Inner bract (lateral view). G. Calyces. H. Calyx lobes. I. Leaves. J. Leaf indumentum (adaxial face). K. Leaf indumentum (abaxial face). (Illustration by Salvatore Brullo based on Bogdanović s.n.. type CAT).

FIGURE 29. Geographical distribution of Limonium milovicii (A). L. omissae (B). L. velutinum (C). L. pharosianum (D). L. subanfractum (E). L. issaeum (F). L. busianum (G). L. brusnicense (H). L. zankii (I). L. vestitum (J). L. pomoense (K). L. cazzae (L). L. lagostanum (M) and L. pelagosae (N).

FIGURE 40. Habit of Limonium lagostanum from holotype. Bogdanović s.n. (CAT).