flora neotropica - CNCFlora

88 Flora Neotropica
tic, coriaceous, 10.5-12 x 4.8-5.7 cm, cordate 7-11.1. Hirtella barnebyi Prance, Brittonia 33:
at base, shortly and abruptly acuminate at apex, 352. 1981. Type. Brazil. Rond6nia: Point 22
the acumen 1-3 mm long, glabrous and shiny of RADAM SC-20-XD, margin of Rio Preto
above, with sparse appressed hirsute pubescence nr. rapids, 30 Aug 1975 (fl), M. dos R. Cordeiro
on lower surface; midrib prominulous above, 703 (holotype, INPA 57032; isotypes, IAN,
prominent and appressed beneath; primary veins INPA 54595). Fig. 122.
10-13 pairs, prominulous above, prominent be-
Shrub 2 m
neath, secondary venation prominulous on both
tall, the young branches sparsely
surfaces; petioles 1-3 mm long, terete, tomenhirsutulous,
soon becoming glabrous. Leaf lamina
tellous. Stipules lanceolate, to 5 cm long, ca- oblong, chartaceous, 6-9.5 x 2.5-3.8 cm,
rounded at
ducous, eglandular. Inflorescences of terminal and
base, acuminate at apex, the acumen
9-14 mm
axillary panicles with central rachis and short long, glabrous beneath except for a few
stiff
densely clustered lateral branches bearing 2-4 appressed hairs on venation; primary veins
8-11
flowers, 12-15 cm long, the rachis and branches
pairs, prominulous on both surfaces; midrib
tomentellous. Bracts and bracteoles 1-3 mm prominulous above, prominent beneath; petlong,
ioles 2-2.5 mm
triangular to lanceolate, persistent, with numerlong,
sparsely tomentellous, teous
stipitate tack-like glands. Flowers 5-7 mm
rete, eglandular. Stipules minute, persistent, ca.
1 mm
long. Receptacle campanulate, tomentellous ex- long, tomentellous. Inflorescences 8-12
cm
ternally, glabrous within except for reflexed hairs long, of little-branched panicles with a central
rachis and small lateral branches
at throat; pedicels 3-7 mm long. Calyx lobes
bearing 2-3
five, flowers
acute, eglandular, tomentellous
only, the rachis and branches very sparseexternally,puberulous
within. Petals five. Stamens six, unily
hirsutulous. Bracts and bracteoles 1-1.5 mm
lateral, the filaments far exceeding calyx lobes.
long, lanceolate, persistent, with sessile glands
on
Style sparsely hirsute on lower fourth. Ovary insome,
and caducous bracteoles with large terminal
serted at mouth of receptacle, pilose. Fruit not
gland present only in bud. Flowers 6-7
mm
seen.
long. Receptacle campanulate, with a few
Distribution (Fig. 126). Known only from the
sparse appressed hairs on exterior, glabrous within
type collection, from gallery forest bordering tree
except at throat; pedicels 5-7 mm long, sparsesavanna.
ly appressed hirsute. Calyx lobes five, reflexed in
This species is closest to Hirtella glabrata, but
open flowers, acute, hirsutulous externally,
differs in the shorter, more compact inflores- densely gray-tomentellous within, the margins
cence, the oblong leaves, the distinctly cordate eglandular. Petals five, glabrous. Stamens six,
leaf base, the shorter petioles and the long linear
unilateral, the filaments glabrous, or with a few
hairs on lower 10
stipules. H. confertiflora is also close to H. admm,
free to base, far exceeding
lobes.
derleyi, but differs in the longer leaves that are Style hirsute up to one third of length.
not conduplicate, in the compact inflorescence
Ovary inserted near mouth of receptacle, villous.
Fruit not seen.
with shorter, weaker branches, and in the longer This is most
secretory tip of the bracts.
closely related to Hirtella araguariensis
which has a similar subracemose inflorescence
with a central rachis and short
7-11. Hirtella araguariensis Prance, Fl. Neo- branches bearing 2-3 flowers. This type of inflotrop.
Monogr. 9: 278. 1972.
rescence occurs in only a few species such as H.
eriandra and H. elongata, which are otherwise
Distribution (Fig. 121). This species, described quite distinct from H. barnebyi. This species diffrom
a type collection from Amapa, is much fers from H. araguariensis in the smaller, less
more widely distributed, ranging from north of lanceolate leaves with rounded, not subcordate,
Manaus, east to Amapa.
bases, in the sparsely hirsutulous inflorescence
and flowers, and in the much smaller stipules
Additional specimens examined. BRAZIL. AMAPA: and bracteoles.
Porto Grande, 29 Nov 1976 (fl), Rosa 1052 (MG, NY).
AMAZONAS: Rio Uatuma, Mun. Itapiranga, Igarap6 Catita,
21 Aug 1979 (fl), Cid et al. 640 (INPA, NY); Rio 7-11.2. Hirtella margae Prance, Proc. Kon. Ned.
Pitinga, 27 Aug 1979 (fl), Cid et al. 860 (INPA, NY). Akad. Wetensch. Ser. C. 89: 111-113. 1986.