Macrostelia calyculata Hochr. in Notul. Syst. (Paris) 14: 232. 1952
Transfer of the Malagasy genera Humbertianthus and Macrostelia to Hibiscus (Malvaceae) with description of four new species
Hanes, Margaret M.
Schatz, George E.
Callmander, Martin W.
Candollea
2020
2020-10-29
75
2
193
202
7WM8H
(Hochr.) M. Hanes, G. E. Schatz & Callm.
M. Hanes, G. E. Schatz & Callm.
2020
Hochr.
Magnoliopsida
Malvaceae
Hibiscus
Plantae
Malvales
1
194
Tracheophyta
species
calyculatus
comb. nov.
Macrostelia calyculataHochr.in Notul. Syst. (Paris) 14: 232. 1952.
Vernacular name.– “Tsilaitra” ( Service Forestier 2046, 14420). Distribution and ecology. – Hibiscus calyculatusgrows in medium elevation moist evergreen forests east of Fianarantsoa, in the massif of Andrambovato, in the Ampamaherana valley and near Kianjavato (D. Scherberich, pers. comm.) from 1155–1300 min elevation ( Fig. 2). Conservation status. – Hibiscus calyculatusis known from 3 locations all encompassed in the Protected Area Network (Corridor Forestier Ambositra-Vondrozo and Ranofanana). Despite the very restricted Extent of Occurrence (EOO) of 12 km² and an Area of Occupancy (AOO) of 8 km², there appear to be no current threats to H. calyculatus. Thus, the species is assigned a conservation status of “Least Concern” [LC] using the IUCN Red List Categories and Criteria ( IUCN, 2012), with the caution that this status is highly dependent on continued effective protection. Fig. 1. –Photographs of flowers of HibiscusL. A. Hibiscus calyculatus(Hochr.) M. Hanes, G.E. Schatz & Callm.; B. Hibiscus laurinusBaill.; C. Hibiscus ambanitazensisM. Hanes & G.E. Schatz. [ B: Rasoandriana 89; C: J. Razanatsoa 644] [Photos: A:D. Scherberich; B:P. Antilahimena; C:B. Mashburn] Notes. – Hibiscus calyculatusis distinguished from all other pendent Hibiscuson Madagascarby its four small ( 3–4 mm), free, reflexed epicalyx bracts and a distinctive red, tubular calyx. Additional specimens examined.– MADAGASCAR. Reg. Vatovavy-Fitovinany[Prov. Fianarantsoa]: Massif d’Andrambovato, Tolongoina, Ikongo, 21°30'58"S 47°25'36"E, 1155 m, 28.V.1998, fl., Razafimandimbison335( G, MO, P, TAN, TEX); Fort Carnot, Andrambovato Station Forestier, Parcelle A-16, [ 21°31'S 47°25'E], 28.VII.1954, fl., Service Forestier14420( P, TEF).
3407889326
1949-05-25
P, G, TEF
Service Forestier
Madagascar
1300
-21.316668
vallee Ampamaherana
1264
47.316666
vallee Ampamaherana
1
194
P00037125, G00014441
1
Reg. Haute Matsiatra [Prov. Fianarantsoa
holotype
3407889319
1954-07-28
G, MO, P, TAN, TEX
Razafimandimbison
Madagascar
Massif d'Andrambovato
1155
-21.516111
Ikongo
21
47.426666
Tolongoina
3
196
1
Reg. Vatovavy- Fitovinany [Prov. Fianarantsoa
3407889323
1954-07-28
P, TEF
Service Forestier
Madagascar
Massif d'Andrambovato
1155
-21.516111
Andrambovato Station Forestier
21
47.426666
Fort Carnot
3
196
1
Reg.