Manihot Manihotoides (Euphorbiaceae) - CNCFlora

136 Flora Neotropica
47. Manihot jacobinensis Mueller von Argau, Linnaea 34: 205. 1865; in DC., Prodr.
15(2): 1070. 1866; in Martius, Fl. Bras. 11(2) 471. 1874; Pax in Engler, Pflanzenreich
IV. 147(Heft 44): 31. 1910.
Manihot occidentalis Muell.-Arg. in Martius, Fl. Bras. 11(2): 468. 1874; Pax in Engler,
Pflanzenreich IV. 147(Heft 44): 31. 1910. Type. Tamberlik s n (syntypes, F-2, G, W).
Manihot rigidifolia Pax & K. Hoffmann in Engler, Pflanzenreich IV. 147(Heft 85): 194. 1924.
Type. Luetzelburg 484a (syntypes F, M); Luetzelburg 484b (syntype, M).
Shrubs. Stems glabrous. Leaves alternate; stipules caducous; petioles ca 6.0 cm long,
terete, glabrous, petiole attachment to lamina basal, nonpeltate; lamina coriaceous,
adaxial surface dark green, abaxial surface with a light bloom, abaxial surface wax pattern
spongiose; venation camptodromous, veins glabrous; lamina 3 lobed, lobes prominently
overlapping at sinus; median lobes ovate to almost rotundate, ca 5.0 cm long, ca 4.0 cm
wide, apex broadly acute, base of lobes constricted ca 0.5 cm wide, lowest lobes more or
less similar to median lobes in outline and size. Inflorescence a monoecious, terminal
raceme, ca 12.0 cm long, held erect, all parts glabrous, with light bloom on peduncles,
pedicels, tepals, etc; bracteoles foliaceous, 1.5 cm long, 0.8 cm wide; bractlets foliaceous,
1.0 cm long, 0.4 cm wide. Pistillate flowers restricted to the base of the upper 2/3 of the
inflorescence, tepal 1.0 cm long, cleft to base into 5 lobes, ovary subglobose, glabrous.
Staminate buds slightly bifusiform; flowers medium sized, tepal 1.0 cm long, cleft 1/3
way down into 5 lobes, stamens 10, in 2 whorls of 5 each. Fruits and seeds non vidi.
Fig 58C.
TYPE. Blanchet 2553: Brasil, Bahia: Serra da Jacobina, 1836 (syntypes, BM, F-3,
G-3, K, NY, P-2, W-2).
DISTRIBUTION. (Fig 58B). Brasil, states of Mato Grosso and Bahia. Alt ca 1000 m.
BRASIL. Mato Grosso: Maguire, Pires, Maguire & Silva 56464 (NY) Gallery forest, Rio Juruena, on
Brasilia-Acre Highway, 1 Sep 1963. Bahia: Blanchet 3553 (G) Province Jacobina, 1843; Froes 12630
(NY) Central Portion of State, Oct 1942; Luetzelburg 484a (F, M) Lencoes, Pedra de Chapeo, 1914;
Luetzelburg 484b (M) Lencoes, Pedra de Chapeo, 1914; Pereira 2023 (PUL-2, RB) Morro Do Chapeu,
11 Sep 1956; Pereira 2023A (RB) Morro Do Chapeu, 11 Sep 1956. Province Unknown/Uncertain:
Riedel s n (P). Province Unknown/Uncertain: Tamberlik s n (F-2, G, W) Brazilia Occid.
The specimen collected by Maguire et al (56464, NY) fits the descriptions and type
of Manihot jacobinensis in its major features, but differs in that the bracts are setaceous,
while those of jacobinensis are foliaceous. However, species of section Quinquelobae to
which jacobinensis clearly belongs are quite variable in this character, and the possibility
of genetic recombination must not be ruled out. Quite possibly, the Maguire specimen
represents a distinct taxon, but we feel that this single collection does not give sufficient
basis for such designation. Therefore, we maintain Maguire et al 56464 as a variation
within the M. jacobinensis complex.
48. Manihot divergens Pohl, P1. Bras. Ic. et Descr. 1: 41. t. 33. 1827.
Manihot arcuata Pohl, PI. Bras. Ic. et Descr. 1: 42. 1827; Manihot violacea Pohl emend. Muell.
Arg. var arcuata (Pohl) Muell. Arg. in DC., Prodr. 15(2): 1069. 1866; Jatropha arcuata
Steudel, Nomencl. ed. 2. 1: 799. 1840. Type. Pobl 1183 (syntypes, (F-2, G, W-2).
Jatropha divergens Steudel, Nomencl. ed. 2. 1: 799. 1840; Manihot violacea Pohl emend.
Muell.-Arg. var divergens (Pohl) Muell. Arg. in DC., Prodr. 15(2): 1069. 1866.
Tall shrubs, to 2.5 m tall. Young stems, glabrous, reddish brown; mature stems
glabrous. Leaves alternate; stipules caducous, glabrous, ca 1.0 cm long; petioles ca 10.0
cm long, obtuse-angled, glabrous, petiole attachment to lamina basal, nonpeltate; lamina
coriaceous, adaxial surface dark green, glossy, abaxial surface glaucous, abaxial surface
wax pattern smooth; venation camptodromous, veins glabrous, midribs stout, 0.15 cm in
diam near the petiole-lamina junction; lamina 3 lobed, leaves associated with the
inflorescence frequently nonlobed; median lobes oblong-obovate, 10.0-15.0 cm long,