Brexia humbertii H. Perrier

Schatz, George E. & Lowry Ii, Porter P., 2004, A synoptic revision of Brexia (Celastraceae) in Madagascar, Adansonia (3) 26 (1), pp. 67-81 : 76-77

publication ID	https://doi.org/ 10.5281/zenodo.5181310
persistent identifier	https://treatment.plazi.org/id/03D487CF-1C54-A35E-FD7E-A24AAB9F89EB
treatment provided by	Carolina
scientific name	Brexia humbertii H. Perrier
status

Treatment

8. Brexia humbertii H. Perrier View in CoL

Bull. Soc. Bot. France 89: 220 (1942). — Lectotype

(here designated): Humbert 5798, Madagascar, Prov.

Toliara, environs de Fort Dauphin , forêt de

Manantantely; 22 Sep. 1928, fl. (P!; iso- MO!) .

Brexia horombensis View in CoL J.- F. Leroy, Adansonia, n.s. 8: 463 (1968). — Type: Leroy II-1-22, Madagascar, savanne arborée de l’Horombe à 18 km d’Ihosy (specimen not relocated), syn. nov .

Brexia montana var. bracteata H. Perrier, Bull. Soc. Bot. France 80: 201 (1933). — Type: Perrier de la Bâthie 4510, Madagascar , Tampoketsa d’Amberimay [Beveromay], versant S du haut Bemarivo, vers 1000 m, Sep. 1907, bud, fl. (holo-, P!), syn. nov.

Brexia humbertii View in CoL is a shrub to small tree known from humid forest on sand, subhumid forest on laterite, and transitional subhumid to subarid forest on laterite from the Fort Dauphin region to Ihosy and just W of Ambalavao, with a disjunct collection from the Tampoketsa Beveromay c. 600 km to the N (Fig. 5). It can be recognized easily by its pseudo-umbellate inflorescence, the long peduncle bearing a pair of large persistent bracts at the apex, and its oblanceoloid to obovoid fruits, which have been reported to be edible. The margins of adult leaves can be either entire or spinose.

Among the three original syntypes ( Humbert 5798, 13985 and 14094) designated by PERRIER DE LA BÂTHIE (1942), Humbert 5798 is here chosen as the lectotype.

VERNACULAR NAMES. — Fonofonozanahary, Hanana, Hazondrea, Marandravina, Rehampy, Tsiokagnomby, Vahomanana, Voakarepoka, Voakarepokala, Voanana, Voanora.

CONSERVATION STATUS. — With an EO of 80000 km 2, an AO of 1700 km 2, and 10 subpopulations, 3 of which are encompassed within protected areas (Andohahela PN, and Kalamabatritra RS), Brexia humbertii is assigned a preliminary status of Least Concern (LC).

MATERIAL EXAMINED. — MADAGASCAR: Bernardi 11150, Iandranbaky; Croat 31709, Analamatsaky; Dumetz 538, 598, 1278, Mandena STF, 1415, Andohahela PN; Eboroke 96, Andohahela PN; Humbert 3015, 3019, Ihosy, 5798, Manantantely, 11655bis, Mont Vohipolaka, 13985, Aniampanga, 14094, Andohahela PN; Laha 129, Andohahela PN; Leandri 4312, Andohahela PN; McWhirter 190, Vohitsiandriana; Peltier 2647, Ihosy; Perrier de la

FIG. 5. — Distributions of Brexia , mapped on the bioclimatic zones of Madagascar (after CORNET 1974; see SCHATZ 2000).

Bâthie 4510, Amberimay [Beveromay]; Rabevohitra 1945, Sainte Luce, 2196, Mandena STF, 3731, Mandromodromotra; Rakotomalaza 480, Andohahela PN; Randriamampionona 44, 76, 130, Andohahela PN; Randrianasolo 176, 182, Andohahela PN; Réserves Naturelles 6734, 8187, 10466, Andohahela PN; Service Forestier 1542, Mandena STF, 3971, Ranopiso-Fort Dauphin, 6082, Mandena STF, 8502, Ranopiso, 8521, Tsimelahy, 13783, Kalambatritra RS, 14819, Androtsy-Ihosy, 17213, Andohahela PN, 22378, Vohitsiandriana, 23514, Lalanandro, 27835, Iarintsena, 28329, Vohitsiandriana, 34984, 34989, Ambinanibe, 158-R-239, Ihosy, 275-R-16, Mandena STF.