Manihot Manihotoides (Euphorbiaceae) - CNCFlora

24 Flora Neotropica
16. Lamina membranaceous; adaxial surface green, abaxial surface
devoid of bloom and violet pigmentation; midribs yellowish green
without purplish tinge.
17. Inflorescence racemose, not subspicate; leaves usually 5 lobed,
nonlobed leaves rare; plants glabrous, never pubescent.
Sect 5. Anisophyllae (p. 105).
17. Inflorescence subspicate; leaves usually 3 lobed, but often
nonlobed; plants glabrous or with various degrees of pubescence.
18. Petiole attachment basal. Sect 9. Sinuatae (p. 163).
18. Petiole attachment peltate.
Sect 10. Variifoliae (p. 172).
15. Vine-like shrubs, clambering over other vegetation. Manihut peruviana
(racemose species of section 12. Peruvianae). See also second
10.
14. Trees, usually more than 5.0 m tall. Manihot catingae and M.
dichotoma, (racemose species of section 11. Glaziovianae). See also
second 11.
13. Leaf lobe bases extremely constricted; lobes not overlapping at sinus;
lamina at lobe base usually less than 0.3 cm wide, lamina between base
of sinus and petiole-lamina junction usually less than 0.3 cm wide.
19. Bracts and bracteoles dilated, broadly lanceolate to ovate, more than
0.5 cm wide; inflorescence usually pendent.
20. Tall shrubs to trees, usually more than 3.0 m tall; lamina coriaceous;
abaxial surface wax pattern showing discrete rings (at magnifications
of X 40); petioles usually more than 8.0 cm long; bracts and
bracteoles with entire margins, capsule with prominently raised ribs,
apex acute; frequently cultivated as latex yielders.
Sect 19. Caerulescentes (p. 238).
20. Low to medium shrubs, usually less than 3.0 m tall, lamina
membranaceous, wax on abaxial surface forming a reticulum (at
magnification X 40); petioles usually less than 8.0 cm long; bracts
and bracteoles with serrate or laciniate margins; capsule surface
smooth, apex rounded; not known to be cultivated as latex yielders.
Sect 18. Tripartitae (p. 230).
19. Bracts and bracteoles narrow, lingulate to setaceous, less than 0.25 cm
wide; inflorescence usually erect. Manihot xavantinensis (lobe-baseconstricted
species of section 7. Quinquelobae). See also second 16.
8. Abaxial surface of leaves tomentose.
21. Leaves 5 or more lobed.
22. Inflorescence less than 10.0 cm long; petioles less than 15.0 cm long;
base of lamina without lobules. Sect 15. Grandibracteatae (p. 213).
22. Inflorescence more than 10.0 cm long; petioles more than 15.0 cm long;
lobules at base of lamina. Manihot jolyana (tomentose species of section
4. Heterophyllae). See also second 12.
21. Leaves 3-lobed.
23. Raceme solitary; bracts and bracteoles laciniate; nonlobed leaves rare;
lobe bases less than 1.0 cm wide; with lobules at base of lamina. Manihot
tripartita subsp vestita (tomentose species of section 18. Tripartitae). See
also second 20.
23. Racemes in a cluster arising from a common base; bracts and bracteoles
with entire margins, nonlobed leaves frequent; lobe bases more than 1.0
cm wide; without lobules at base of lamina. Manihot anomala subsp
pubescens (tomentose species of section 9. Sinuatae). See also second
18.
7. Procumbent, weak-stemmed, semiherbaceous shrubs, usually less than 0.5 m tall;
leaves small, median lobes usually less than 4.0 cm long.
Sect 13. Crotalariaeformes (p. 199).
6. Leaf lobes distinctly linear, or narrowly lanceolate.
25. Stipules caducous; petiole attachment basal. Sect 8. Graciles (p. 141).
25. Stipules persistent; narrowly peltate. M. marajoara, M. surinamensis (linearlobed
species of section 4. Heterophyllae). See also second 12.
5. Plants acaulescent or nearly so; less than 25.0 cm tall; leaves borne more or less as a