Cecropiaceae: Coussapoa and Pourouma, with an ... - CNCFlora

Pourouma 123
white-arachnoid indument is usually confined to
the areoles. In P. bicolor the reticulum is, in most
of the subspecies, merely slightly prominent to
plane and usually inconspicuous as the arachnoid
indument usually also occurs on the smaller veins.
However, in a form of P. bicolor subsp. bicolor,
occurring in the western part of the range of the
subspecies, the arachnoid indument is confined
to the very small areoles surrounded by relatively
thick veinlets, and in P. bicolor subsp. scobina
the arachnoid indument is also more or less confined
to the areoles, but in this subspecies this
feature is combined with ? prominent smaller
veins.
In P. guianensis two allopatric subspecies can
be recognized.
Key to the Subspecies
of Pourouma guianensis
1. Lamina 3-5-fid to -parted; leafy twigs and petioles
with long yellow hairs; stipules hairy inside;
fruiting perianth 2-2.5 cm long; northern Venezuela
................ b. subsp. venezuelensis.
1. Lamina entire, 5-7-fid to -parted, or if 3-5-fid
to -parted, then the leafy twigs and the petioles
without long yellow hairs, the stipules glabrous
inside, and/or the fruiting perianth 1.2-2 cm long;
Guiana region, eastern Brazil, Amazon Basin to
eastern Colombia. ........ a. subsp. guianensis.
la. Pourouma guianensis Aublet subsp.
guianensis. Fig. 59.
Pourouma palmata Poeppig & Endlicher, Nov. gen.
sp. pi. 2: 29, t. 141. 1838; Tr6cul, Ann. Sci. Nat.
Bot., Ser. 3, 8: 104. 1847; Miquel in Martius, Fl.
bras. 4(1): 126. 1853; Macbride, Publ. Field Mus.
Nat. Hist., Bot. Ser., 13(2.2): 293. 1937. Type. Peru.
San Martin: Tocache, Aug 1830 (6 and 9), Poeppig
s.n. or 1881 (holotype or syntypes, W, destroyed;
lectotype, G (Q specimen!), fragment of 6 specimen
in F).
Pourouma acutiflora Trecul, Ann. Sci. Nat. Bot., S&r.
3, 8: 105. 1847; Miquel in Martius, Fl. bras. 4(1):
126. 1853. Type. Brazil. Rio de Janeiro: Without
locality, 1839 (6), Guillemin 1024 (holotype, P).
Pourouma cinerascens Martius ex Miquel in Martius,
Pourouma scabra Rusby, Bull. New York Bot. Gard.
6: 498. 1910. Type. Bolivia. Pando: Santa Barbara,
30 Aug 1902 (9), R. S. Williams 1560 (holotype, NY;
isotype, US).
Pourouma radula Benoist, Bull. Mus. Hist. Nat. (Paris)
28: 320. 1922; Woodson & Schery, Ann. Missouri
Bot. Gard. 47: 166, t. 58. 1960. Type. Colombia.
Without locality, without date (a), Triana 860 (ho-
lotype, P; isotypes, E, NY).
Pourouma subtriloba Rusby, Mem. New York Bot.
Gard. 7: 232. 1927. Type. Bolivia. La Paz: Nr. Tu-
mapasa, 12 Oct 1921 (9), Cardenas 1990 (holotype,
NY; isotypes, GH, US).
Pourouma substrigosa Mildbraed, Notizbl. Bot. Gart.
Berlin-Dahlem 10:192. 1927; Macbride, Publ. Field
Mus. Nat. Hist., Bot. Ser., 13(2.2): 293. 1937. Type.
Peru. Loreto: Pongo de Manseriche, 26 Nov 1924
(8), Tessmann 4642 (holotype, B, isotypes, B, G,
NY).
Pourouma mildbraediana Standley, Publ. Field Mus.
Nat. Hist., Bot. Ser., 17: 183. 1937. Type. Brazil.
Amazonas: Mun. Sao Paulo de Olivenoa, nr. Pal-
mares, 11 Sep-26 Oct 1936 (a), Krukoff 8386 (ho-
lotype, NY; isotypes, A, BR, F, G, LE, MO, P, S, U,
US).
Leafy twigs pale to bright yellow-hirtellous to
-subvelutinous to -hirsute, brown, pluricellular
hairs dense to sparse. Lamina entire, 3-5-lobed
to -parted, or sometimes 5-7-parted, base shal-
lowly to deeply cordate or sometimes rounded;
lateral veins mostly 10-16, sometimes up to 20,
or occasionally up to 25 pairs; stipules outside
pale to bright yellow-hirtellous, -subvelutinous,
-subtomentose or -hirsute, inside glabrous or
sometimes hairy. Fruitingperianth 1.2-2 cm long,
mostly densely hairy, sometimes sparsely hairy
or scabrous.
Distribution (Fig. 60). Throughout the Ama-
zon Basin, extending to eastern Colombia and
the Guiana region; occurring disjunctly in east-
ern Brazil (from Pernambuco to Santa Catarina);
mostly in non-inundated forest, sometimes in
periodically inundated (varzea) forest; mostly at
low altitudes, in Venezuela (Bolivar) up to ca.
1300 m, in Bolivia up to 1500 m.
Specimens examined. Colombia. Without locality,
without date (d), Triana 860 (E, NY, P, type collection
Fl. bras. 4(1): 125, t. 37. 1853. Type. Brazil. Ama- of P. radula), without date (6 and 9), Triana s.n. (E, P).
zonas: Rio Japura, Maripi, without date (6), Martius META: Puerto Lopez, 3 Aug 1944 (st), Liitle et al. 8423
s.n. (holotype, M; isotypes, M, U).
(F); Villavicencio, Llano de San Martin, without date
Pourouma heterophylla Martius ex Miquel in Martius, (9), Karsten s.n. (GOET, LE).
Fl. bras. 4(1): 125. 1853. Type. Brazil. Amazonas: VENEZUELA. AMAZONAS: Rio Manavicke, Indian
Rio Japura, Dec 1819 (st, juv), Martius s.n. (holo- village "Kalchi-Teri," without date (juv.), Lizot s.n.
type, M; isotypes, M, U).
(VEN); Sierra Parima, 1300 m, 18-23 May 1972 (st),
Pourouma fulginea Miquel in Martius, Fl. bras. 4(1): Steyermark 106086 (NY); Parima Mts., nr. Simara-
129. 1853. Type. Brazil. Amazon Basin, without date wochi, Rio Matacuni, 18 Apr-23 May 1973 (d), Stey-
(Q), Martius s.n. (holotype, M; isotype, U). ermark 107154 (F, U, VEN). BOLIVAR: Reserva Fo-