Rodriguésia 63(3): 2012
http://rodriguesia.jbrj.gov.br
Tillandsia paraibensis, a new species of Bromeliaceae from Northeastern Brazil
Tillandsia paraibensis, uma nova espécie de Bromeliaceae do Nordeste do Brasil
Ricardo Ambrósio Soares de Pontes1,2
Abstract
Tillandsia paraibensis is described and illustrated as a new species known only from the state of Paraíba,
Brazil. The affinities of this new species to other species and information on its biology are discussed.
Key words: taxonomy, inselbergs, Paraíba.
Resumo
Tillandsia paraibensis, uma espécie nova do estado da Paraíba é descrita e ilustrada. A afinidade desta espécie
com outras do gênero e informações sobre sua biologia são discutidas.
Palavras-chave: taxonomia, inselbergs, Paraíba.
Introduction
The Bromeliaceae is currently divided
into eight subfamilies, comprising 3,172
species (Stevens 2008). The genus Tillandsia
is one of the most diverse genera within
the family, comprising 595 species (Luther
2008) grouped in six subgenera: Tillandsia,
Allardtia (A. Dietr.) Baker, Anoplophytum
(Beer) Baker, Diaphoranthema (Beer) Baker,
Phytarrhiza (Vis.) Baker, and Pseudalcantarea
Mez (Barfusset al. 2005).
According to Leme et al. (2010), the
genus has a wide geographic distribution,
and the species vary greatly in habitat, size,
and leaf and flower architecture. The species
invariably have entire leaf margins, free petals
usually without appendages, stigmas which are
usually conduplicate, spiral, or simple-erect,
rarely coralliform or with convolute blades,
superior ovaries, ovules which are generally
long-caudate, and plumose seeds with straight
basal appendages.
In 2006, Pontes & Agra cited the occurrence
of 12 species of Tillandsia for this state of
Paraíba. Currently 17 species are recognized for
the state (Forzza et al. 2012).
Material and Methods
For a description of the species, we used
the usual terminology for the family following
the works of Smith & Downs (1977), Ehlers &
Till (2008), and Leme (1993). We studied the
collections of the following herbaria (acronyms
according Holmgren et al. (2003): JPB, IPA,
UFP, RB, HB and a virtual visit to WU.
Results and Discussion
We collected an unusual species of
Tillandsia,subgenus Anoplophytum,from
inselbergs in the municipality of Araruna,
Paraíba, near the border of Rio Grande do Norte
(Fig. 1). After exhaustive taxonomic study we
determined that it represents a species new to
science and describe it here.
Tillandsia paraibensis R.A. Pontes, sp. nov. Type:
BRAZIL. PARAÍBA: Araruna, Pedra da Boca
State Park, 06º27’02.5”S, 35º40’38”W, 240 m,
23.XII.2010, fl., J.C. Casteliano 01 (holotype JPB!;
isotype RB!).
Figs. 2a-e and 3a-i
Species nova Tillandsia minageirasensis,
affinis, inflorescentia erecta pallide rosea, floribus
sessilibus cum staminibus quam calyce majoribus,
filamentis manifeste plicatis differt.
1
Universidade Federal da Paraíba, Centro de Ciências Exatas e da Natureza, Depto. Sistemática e Ecologia, Setor de Botânica, C.P. 5065, 58051-970, João Pessoa,
PB, Brasil.
2
Author for correspondence: ricardoapontes@yahoo.com.br
Pontes, R.A.S.
Figure 1 – Location of Paraíba state, highlighting the
municipality of Araruna where the State Park of Pedra da
Boca is located.
Plant stemless, rupiculous, flowering 13–22
cm high (Fig. 2). Leaves many, ca.70, densely
arranged, strongly secund, subcoriaceous toward
the base, never exceeding the inflorescence; sheath
inconspicuous and barely distinct from the blade;
blade strongly narrowly triangular, canaliculate
toward the base, 10–14 cm long, ca. 1 cm wide,
distinctly shorter than the inflorescence, densely
white-lepidote on both sides with trichomes
adpressed and completely obscuring the color of
the blades, the apex long filiform-caudate. Scape
erect, 3–6 cm long, 3–4 mm diameter, green,
glabrous; scape-bracts densely imbricate, 4–6 ×
0.9–1 cm, lepidote, the apex 1.8–2.5 cm, the base
truncate, ecarinate, pale rose, glabrous, finely
nerved, distinctly exceeding the internodes, the
lower membranous-foliaceous, the upper ellipticlanceolate, long filiform-caudate; inflorescence
a simple, erect spike, 10–12 flowered, 4.5–5.5
cm long, ca. 2.5 cm diameter, pale rose, the axis
slender, terete, glabrous, covered by the floral bracts,
greenish, the internodes 2–3 × 0.2–0.4 cm; primary
bracts narrowly elliptic to obovate-elliptic, acute,
ca. 2.5 × 1 cm, apiculate-caudate (basal ones) to
shortly apiculate (upper ones), ecarinate, pale rose,
white-lepidote only toward the apex, membranous,
finely nerved, erect; floral bracts elliptic-lanceolate,
acute and minutely apiculate, 2–2.5 × 1 cm, the base
truncate, ecarinate, pale rose, glabrous, membranous,
finely nerved, never exceeding 1/2 the length of the
petals, imbricate. Flowers 2–2.5 cm long, odorless,
erect, polystichously spirally arranged, sessile;
sepals lanceolate, acute, ca. 1.5 × 0.5 cm, glabrous,
greenish, ecarinate, membranous, inconspicuously
connate at base, the margin hyaline; petals sublinear,
2–2.5 × 0.3 cm, slightly broader toward apex, 5
mm wide, elliptic, recurved at anthesis, white,
membranous, free. Stamens equaling the stylet, ca.
2 mm above the base, filaments flat, membranous,
hyaline, strongly plicate, the anthers ca. 2 mm long,
linear, obtuse at both ends, dorsifixed near the base;
ovary subglobose, greenish, glabrous; style elongate,
cylindrical, glabrous; stigma conduplicate-spiral,
recurved blades, hyaline-whitish. Fruits and seeds
not observed.
It occurs in Brazil, in the state of Paraíba,
region of Curimataú. It is known only on three
inselbergs in the Pedra da Boca State Park: i.e., Pedra
do Carneiro, Pedra da Santa, and Pedra da Boca.
Tillandsia paraibensis grows on vertical granite rock
in full sun, usually in scattered, small clumps formed
by few individuals. Elevation is 240 m. Flowering
occurs in October. We observed it for over five
years in the field and in cultivation, with no record
of flowering. Live specimens of this new Tillandsia
species are in cultivation in the bromeliad collection
of the João Pessoa Botanical Gardens, Paraíba.
The specific epithet comes from the collected
region, Paraíba state.
This new species is morphologically similar to
Tillandsia minasgeraisensis Ehlers & W. Till (Tab.
1), a terrestrial or rupiculous species (from habitat
“campos rupestres”), near Diamantina (18°14’56”S,
43°36’0”W), in the state of Minas Gerais (Elhers
& Till 2008). Tillandsia paraibensis (Fig. 1)
differs from T. minasgeraisensis by its erect, pale
rose inflorescence (vs. curved and coral), floral
bracts not exceeding half of the petal length
(vs. equal to the height of the flower), and
filaments strongly plicate (vs. slightly plicate).
Rodriguésia 63(3): 2012
Tillandsia paraibensis, a new species of Bromeliaceae
a
b
c
f
e
d
Figure 2 – Tillandsia paraibensis ‒ a. Pedra da Boca State Park, detail of Pedra do Carneiro; b. population on vertical
rock, with Brassavola turbeculata Hook. (Orchidaceae); c. flowering habit; d. detail of inflorescence; e. flowers in top view.
Rodriguésia 63(3): 2012
Pontes, R.A.S.
Table 1 – Morphological comparison of Tillandsia paraibensis and T. minasgeraisensis.
Attributes
Tillandsia paraibensis
Tillandsia minasgeraisensis
Habitat
Granitic rocks
Flat rocks
Leaves
10‒14 cm, strongly secund, never exceeding the 10 cm, more or less secund, not exceeding the
inlorescence
inlorescence
Scape
Erect, 3‒6 cm long
Curved, 5‒7 cm long
Scape bracts
Elliptic-lanceolate, pale rose, lepidote
Elliptic-acuminate, red, inely pruinose
Floral bracts
Elliptic-lanceolate, 2‒2.5 cm, pale rose, glabrous
Ovate or elliptic, 2‒2.3 cm, coralline, finely
pruinose-lepidote
Flower
2‒2.5 cm, sessile
2.6 cm, sessile
Sepals
Lanceolate, 1.5 cm
Ovate, 1.4‒1.7 cm
Petals
Sublinear, 2‒2.5 cm, apex elliptic, white
Lingulate, 2.6 cm, apex slightly crenate, white
Stamens
Equaling the stylet
Longer than the stylet
Anthers
2 mm long
3 mm long
Stigma
Recurved blades
Erect blades
d
c
f
g
e
a
b
h
i
Figura 3 – Tillandsia paraibensis – a. habit; b.flower; c. floral bracts; d. calyx; e. sepal; f. staminate petal; g.plicate
stamen; h. pistil; i. cross section of the ovary. Scale = 1 cm. (R.A.Pontes 712).
Rodriguésia 63(3): 2012
Tillandsia paraibensis, a new species of Bromeliaceae
Key to species of the Tillandsia paraibensis and T. minasgeraisensis
1.
Scape less than 7 cm long; loral bracts equal to or shorter than the petals; leaves secund.
2. Inlorescence recurved, coralline; scape bracts red; loral bracts pruinos elepidote, equalling the
lowers; sepals ovate; stems longer than the style (Minas Gerais) ................. T. minasgeraisensis
2'. Inlorescence erect, pale rose; scape bracts pale rose; loral bracts glabrous, less than 1/2 the length
of the lowers; sepals lanceolate; stems equalling the style (Paraíba) ........ T. paraibensis (Fig. 3)
Acknowledgements
I thank Dr. William Wayt Thomas for
corrections of the english and suggestions on the
manuscript; Dr. Elton Leme for publications and
for suggestions, and to friend and professional
climber Júlio César Casteliano, for monitoring and
collecting the species in this difficult to reach area.
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Artigo recebido em 13/09/2011. Aceito para publicação em 10/04/2012.
Rodriguésia 63(3): 2012