Benthamia bosseri Hervouet, 2014

Hervouet, Jean-Michel, Descourvières, Pascal, Fienena, Félicitée Rejo & Ranaivo, Jaona, 2014, Two new species of the genus Benthamia A. Rich. (Orchidaceae) from Madagascar, B. boiteaui Hervouet, sp. nov. and B. bosseri Hervouet, sp. nov., Adansonia (3) 36 (2), pp. 209-219 : 217

Benthamia bosseri Hervouet , sp. nov.

( Figs 3 , 4 ; Table 1)

Herba terrestris 20 cm usque ad 70 cm alta, Benthamiae cinnabarinae (Rolfe) H. Perrier et Benthamiae verecundae Schltr. vicina, sed rachide valde arcuata et labello non resupinato praecipue differt. Quoque Benthamiae procerae Schltr. similis, sed non solum labello non resupinato differt, sed etiam forma calcaris , disciformi et non dilatata ad apicem. TYPUS. — Madagascar. Fianarantsoa Province, Haute Matsiatra Region , Ambondrombe , among wet rocks, 1700 m, fl., 11.IV.1941, Boiteau 4634 (holo-, P [ P00692301 !]; iso-, P [ P00692302 !, 3 individuals]) .

PARATYPES. — Madagascar. Fianarantsoa Province, Haute Matsiatra Region, Ambondrombe,among wet rocks, 1700m, fl., 11 IV 1941, Boiteau 4634 ( P [ P00692302 !, 3 individuals]); marsh with mosses near summit of Ambondrombe , 1900 m, fl., 11.IV.1941, Boiteau 4598 ( P [ P00692299 !, 2 individuals], P [ P00692300 !, 2 individuals]); Andringitra National Park , among vegetation in altitude [approximate coordinates: 22°13’22”S, 46°55’45”E], fl., IV.1964, Bosser 19648 ( P [ P00692265 !, 3 individuals]) .

Figures

FIG. 3. — Benthamia bosseri Hervouet, sp. nov.: A, habit (after wild specimen); B, flower (Boiteau 4634); C, side view of flower; D, exploded view of perianth. Scale bars: A, 50 mm; B, 3 mm; C, 2 mm; D, 4 mm. Drawing by Alain Jouy.

FIG. 4.— Benthamia bosseri Hervouet,sp.nov.:typical arched spike with pendent second flowers.Summit of Ambondrombe (9.III.2009). Photograph by Jean-Michel Hervouet.