Classification of Boraginaceae subfam. Ehretioideae: Resurrection of the genus Hilsenbergia Tausch ex Meisn. Miller, James S. Adansonia 2003 3 25 2 151 189 6LX4S J.S. Mill. J. S. Mill. 2003 [743,1085,1030,1056] Magnoliopsida Ehretiaceae Hilsenbergia GBIF Plantae Boraginales 23 174 Tracheophyta species leslieae sp. nov.   Frutex vel arbor parva usquead 5(-10) m alta, ramunculis glabris. Folia ad apice ramunculorum brachyblastorumve in fasciculos densos disposita; lamina obovata usqueoblanceolata, 10-21(-30) mm longa, 6- 12(-16) mm lata, apice obtusa usquerotendata vel emarginata, basi cuneata, margine integra, leviter incrassata, utrinque glabra; petiolo 2-5(-7) mm longo. Inflorescentiae terminale, cymosae. Floresbisexuales; calyce campanulato usquetubulari-campanulato, 4-4.5 mmlongo, 5-lobo, extus glabro, intus apiceum versus dense pubescente; corolla alba, urceolata, 5-6 mmlonga. Fructus drupaceus, ovoideus usquelate-ovoideus, 4- 5.5 mmlongus, 3-4 mmin diam.; pyrenis 4, porcati. TYPUS. —   Miller& Miller3787, Madagascar, Prov. Toliara, 14 kmSE of Tuléaron the road to Sakaraha,  100 m, 23°21’S, 43°42’E, fl.,  26 Dec. 1988(holo-, MO!; iso-, K!, MO!, P!). Shrub or small tree to 5(-10) m tall, thickstemmed, densely branched, the twigs glabrous, often glaucous and densely waxy with age. Leaves fasciculate at branch tips or on short lateral spur shoots, deciduous; blades obovate to oblanceolate, 10-21(-30) mm long, 6-12(-16) mm wide, (length:width ratio 3:1-3:2), the apex obtuse to rounded or emarginate, the base cuneate, the margin entire, slightly thickened, both surfaces glabrous, rarely minutely ciliate along the margin near the leaf base, the venation obscurely brochidodromous, the midrib even with the leaf surface, raised slightly below, the secondary veins 3-4, often indistinct, the tertiary venation reticulate; petioles 2-5(-7) mm long, less than half the length of the blade, or nearly sessile on young leaves, glabrous or rarely minutely puberulent, prominently canaliculate on the adaxial surface.  Fig. 10. —  Hilsenbergia labatiiJ.S. Mill.: A, fruiting branch; B, whole flower; C, open flower showing androecium and gynoecium; D, young fruit with persistent calyx; E, dorsal view of pyrene; F, cross-section of dorsal surface of pyrene. A, D, E, F, Labat 2282; B, C,  Humbert18924. Drawn by A. JOUY. Inflorescences terminal, reduced cymes of 1- 3(-4) flowers, the branches glabrous. Flowers bisexual, on pedicel-like inflorescence branches 2-6 mmlong; calyx campanulate to tubular-campanulate, 4-4.5 mmlong, 3-4 mmwide, 5-lobed, the lobes valvate, triangular, 1-1.5 mmlong, densely pubescent on the apical part of the interior surface, the outer surface glabrous; corolla white, urceolate, 5-6 mmlong, 3-4 mmwide, 5-lobed, the lobes erect to spreading, ovate, 1- 2 mmlong; stamens 5, the filaments 3-4 mmlong, the upper 1-2 mmfree, glabrous, the anthers ellipsoid, 1-1.5 mmlong; ovary conical, 1.2-1.5 mmlong, 0.8-1 mmwide, the style 1.5- 2 mmlong, the 2 stigmas capitate and terminal. Fruits drupaceous, color at maturity unknown, borne in the persistent cup-shaped to spreading calyx, ovoid to broadly ovoid, 4- 5.5 mmlong, 3-4 mmin diameter, the endocarp bony, separating into 4 pyrenes at maturity, c. 4 mmlong, c. 2.5 mmwide, ridged on the exterior surface. — Fig 12.   Hilsenbergia leslieaeis variable in habit, usually being an erect shrub or small tree, sometimes reaching 10 min height (e.g.  Humbert28919), but occasionally is low and prostrate (e.g. SF28553, from wind-swept areas near Cap Sainte-Marie). This species appears to be closely related to, and is easily confused with,  H. croatiiand the differences between them are discussed under that species.  Fig. 11. — Distributions of  Hilsenbergiaspecies, mapped on the simplified bioclimate zones of Madagascar (after CORNET 1974; see SCHATZ 2000).   Hilsenbergia leslieaeis named in honor of my wife, Leslie MILLER, who accompanied me during field studies for this project, including the collection of the typespecimen.  DISTRIBUTION. —  Hilsenbergia leslieaeoccurs in southern Madagascar( Fig. 11) on calcareous substrates. VERNACULAR NAMES. — Taikoaky, Tsingena.  CONSERVATION STATUS. — Provisional IUCN Red List Category: Endangered (EN B2ab(i-iv)).  Hilsenbergia leslieaeoccurs at scattered localities in southern Madagascar, but it is infrequently collected and its Extent of Occurrence is only 60 km 2. It is known to occur in the Réserve Naturelle Intégrale de Tsimanampetsotsa.   PARATYPES. — MADAGASCAR:  Chauvet190, Prov. Toliara, route Sarodrano, Tuléar, fl., fr., 23°28’S, 43°46’E,  13 Nov. 1961( P!, TEF!);   Humbert5403, Prov. Toliara, du lac Tsimanampetsotsa, au delta de la Linta, près d’Itampolo,  1-10 m, 25°02’S, 44°04’E, fl.,  17-24 Aug. 1928( P!);   Humbert28919, Prov. Toliara, environs d’Antanimora, 20-25 kmau SSE, bush xérophile sur terrains cristallins,  200-500 m, 24°49’S, 45°40’E, fl.,  6-9 Feb. 1955( P!);   Perrier de la Bâthie4434, Prov. Toliara, dunes au nord de Tsimanampetsotsa, 24°03’S, 43°43’E, fl., fr.,  June 1910( P!);   Phillipson3042, Prov. Toliara, SE of Tuléar on Route Nationale7, 15 km from town, near La Table,  75 m, 23°25’S, 43°47’E, fl.,  28 Dec. 1988( P!);   Phillipson, Labat& Du Puy3450, Prov. Toliara,  38 kmSW of Ampanihy, on road to Androka, calcareous plateau,  200 m, 24°50’S, 44°25’E, fr.,  5 Feb. 1990( P!);   Service Forestier: SF11723(Capuron), Prov. Toliara, sur les pentes du massif de l’Angavo, à l’est d’Antanimora,  200-530 m, 24°49’S, 45°40’E, fl.,  24-25 Jan. 1955( P!);   Service Forestier: SF25252, Prov. Toliara, Tsimandaha, Antanimora, Dist. Ambovombe,  330 m, 24°49’S, 45°40’E, ster.,  28 Oct. 1964( P!);   Service Forestier: SF 25255, Prov. Toliara, Tsimandaha, Antanimora, Dist. Ambovombe,  330 m, 24°49’S, 45°40’E, ster.,  28 Oct. 1964( MO!, P!);   Service Forestier: SF28553(Capuron), Prov. Toliara, Cap Sainte-Marieet environs Nord du Cap, 25°34’S, 45°09’E, fl.,  17 Dec. 1968( P!). 1988-12-26 MO, K, P Miller Madagascar 100 -23.35 Tulear 1256 43.7 23 174 1 Toliara 1961-11-13 P, TEF Madagascar Chauvet -23.466667 Sarodrano 1255 43.766666 Prov. 26 177 1 Toliara paratype 1928-08-17 1928-08-24 1928-08-17 P Prov. & Tsimanampetsotsa & de la Linta & d'Itampolo Madagascar 6 -25.033333 Toliara 1248 44.066666 26 177 1 Toliara paratype 1955-02-06 1955-02-09 1955-02-06 P Prov. & d'Antanimora Madagascar 350 -24.816668 Toliara 1249 45.666668 26 177 1 Toliara paratype 1910-06 P Perrier de la Bathie & de Tsimanampetsotsa Madagascar -24.05 Toliara 1253 43.716667 26 177 1 Toliara paratype 1988-12-28 P Phillipson & Prov. & La Table Madagascar 75 -23.416666 SE of Tulear on Route Nationale 1256 43.783333 26 177 1 Toliara paratype 1990-02-05 P Phillipson & Labat & Du Puy & Prov. & Androka Madagascar 200 -24.833334 38 km SW of Ampanihy 1249 44.416668 26 177 1 Toliara paratype 1955-01-24 1955-01-25 1955-01-24 P Service Forestier & de l'Angavo Madagascar 365 -24.816668 d'Antanimora 1249 45.666668 Prov. 26 177 SF11723 1 Toliara paratype 1964-10-28 P Service Forestier Madagascar Prov. 330 -24.816668 Antanimora 1249 45.666668 Tsimandaha 26 177 SF25252 1 Toliara paratype 1964-10-28 MO, P Service Forestier Madagascar Prov. 330 -24.816668 Antanimora 1249 45.666668 Tsimandaha 26 177 SF 25255 1 Toliara paratype 1968-12-17 P Service Forestier & Nord du Cap Madagascar -25.566668 Cap Sainte-Marie 1245 45.15 Prov. 26 177 SF28553 1 Toliara paratype