Manihot Manihotoides (Euphorbiaceae) - CNCFlora

Systematic Position of the Genus 149
less than 45" to the median lobes, slightly shorter than median lobes. Inflorescence a
monoecious, terminal panicle, ca 10.0 cm long, few branched, flowers clustered at the
terminal region of peduncles, with a bluish white bloom, all parts glabrous; bracteoles and
bractlets setaceous. Pistillate flowers restricted to the base of the upper 1/3 of the
inflorescence; pedicels 1.0 cm long; tepal 0.8 cm long, cleft to base into 5 lobes.
Staminate buds bifusiform, flowers small, tepal 0.8 cm long, cleft 1/3 way down into 5
lobes; stamens 10, in 2 whorls of 5 each. Capsules and seeds non vidi. Fig 65C, D.
TYPE. Pohl 1184 (and on some specimens also 1708). Brasil, Goias: ad Serra de
Cristaes (syntypes, F, K, M, W-3).
DISTRIBUTION. (Fig 65B). Brasil, states of Goias, Minas Gerais and Distrito Federal.
Alt ca 1000 m, among rocks. BRASIL. Goias: Glaziou 22129 (P, F, G, K, NY) Serra da Baliza, 4
Jan 1895; Pobl Icon Tab. 28 (W). Distrito Federal: Irwin, Souza & dos Santos 12052 (F, G, K, MICH,
NY, SP, UB, US) Corrego Landim, circa 25 km N of Brasilia, 27 Jan 1966;Maguire, Pires, Maguire &
Silva 57088, (NY) Limit parque do Gama (Distrito Federal) and Goias, 15 Oct 1963. Minas Gerais:
Assis 148 (GH) Fazenda Da Chicaca, Municipality Santa Luzia, 20 Nov 1945; Maguire & Maguire
44732 (NY-3), 49 mi from Diamantina, Alt 3800', 22 Dec 1959; Occhioni s n Estrada de Nova Lima,
29 Nov 1940.
Formerly recognized as distinct species, Manihot angustifrons and M. stenophylla
join at a C-value of 0.96 with M. triphylla, and thereafter remain as a distinct cluster until
they join several other members of the Graciles section at C-value. 897.
56. Manihot fruticulosa (Pax) Rogers & Appan, stat nov
Manibot triphylla Pohl var fruticulosa Pax in Engler, Pflanzenreich. IV. 147(Heft 44): 74. 1910.
Slender subshrubs ca 0.5 m tall, rarely to 1.0 m tall. Stems glabrous. Leaves
alternate; stipules caducous; petioles ca 8.0 cm long, terete, glabrous, reddish, petiole
attachment to lamina basal, nonpeltate; lamina membranaceous, abaxial surface wax
pattern reticulate; venation camptodromous, veins glabrous; lamina 3 lobed, lobes
drooping; median lobes linear, ca 10.0 cm long, ca 0.8 cm wide, base of lobes constricted,
0.2 cm wide, width between base of sinus and petiole-lamina junction 0.2 cm; lowest
lobes similar to median lobes in outline, slightly smaller. Inflorescence a monoecious,
terminal panicle usually ca 18.0 cm long, occasionally shorter, all parts glabrous;
bracteoles and bractlets setaceous, less than 0.5 cm long, less than 0.1 cm wide. Pistillate
flowers restricted to the base of the upper 1/2 of the inflorescence; pedicels 1.25 cm long;
tepal 0.8 cm long, yellowish green with purplish streaks, cleft to base into 5 lobes; ovary
subglobose. Staminate buds ovoid-ellipsoid, flowers small, tepal 0.8 cm long, yellowish
green with purplish streaks, cleft 1/3 way down into 5 lobes; stamens 10, in 2 whorls of 5
each. Capsules 1.0 cm long, nonglobose, slightly elongated, surface smooth, apex
rounded, dehiscence septicidal. Seeds small, 0.7 cm long, oblong, caruncle moderately
prominent. Fig 66B, C.
TYPE. Riedel s n (2820?): Brasil, Minas Gerais: bei Alegres (syntypes, K, NY, P).
The Riedel specimens examined were without a collector's number. Pax (1910) cites
Riedel 2820M, which we assume to be the same.
DISTRIBUTION. (Fig 66A). Brasil, states of Goias, Minas Gerais and Distrito Federal.
Alt ca 1000 m. Goias: Irwin, Souza & dos Santos 10013 (F, G, MO, NY, UB) 75 km N of
Cristalina on road to Brasilia, 6 Nov 1965;Irwin, Souza & dos Santos 10493 (F, K, NY, UB, US) circa
7 km E of Cabeceiras, 18 Nov 1965; Irwin, Souza & dos Santos 10938 (F, NY, UB) Cerrado ca 9 km S
of Corumba de Goias, 2 Dec 1965; Irwin, Souza & dos Santos 11039A (NY, UB) Campo and Cerrado
near Rio Descoberto, 4 Dec 1965; Pohl s n (G) Serra dos Christaes. Distrito Federal: Irwin, Souza &
dos Santos 10164 (F, NY, SP, UB) Cerrado adjacent to Parque, Municipality do Gama, 10 Nov 1965.
Minas Gerais: Claussen 756 (P), 1838. Province Unknown/Uncertain: Burchell 5861 (K), 19 Sep 1827.
The new information added from the excellent specimens collected by Irwin et al
makes it possible to more precisely define this taxon. Pax, with only the material of