Chaptalia hermogenis (Asteraceae: Mutisieae), a New Species from
the Brazilian Atlantic Rain Forest
Marta Dias de Moraes
Departamento de Botanica, I.B., UNICAMP, Caixa Postal 6109,
Campinas 13083-970, SP, Brazil
ABSTRACT. Chaptalia hermogenis (sect. Archi-
chaptalia), currently known only from a montane
forest in the Atlantic Rain Forest region of south-
eastern Brazil, is described and illustrated. The
new species is compared with the closely similar
C. cordifolia (Baker) Cabrera. It is distinguished by
a long involucre, the long expanded limb with an
inner linear lip of the female florets, the absence
of tubular-filiform internal female florets, a char-
acter rare in the genus, and a sparsely pubescent
achene.
Chaptalia Ventenat comprises about 56 species
distributed from the southern United States to
southern South America (Nesom, 1995), with at
least 12 species occurring in Brazil. Some Brazilian
species have a wide distribution, while a few seem
to be endemic to smaller areas, such as C. denti-
culata (Baker) Zardini in the Atlantic Rain Forest
of the state of Rio de Janeiro and C. graminifolia
(Dustn) Cabrera in the states of Parana and Santa
Catarina. The most useful taxonomic treatment of
this genus is still the monograph by Burkart (1944).
His seven sections were considered by Nesom
(1995) to be probably natural. A group of species
that Burkart (1944) referred to Trichocline Cassini,
although he found the species difficult to separate
from Chaptalia sect. Archichaptalia Burkart, has
since then been transferred to Chaptalia. Tricho-
cline cordifolia Baker, transferred to Chaptalia by
Cabrera (Cabrera & Klein, 1973), closely resem-
bles the new species described here. Trichocline,
distributed in South America, and Gerbera L., in
Africa and Asia, are generally accepted as closely
related to Chaptalia, but both differ from this genus
by the presence of staminodes in the female florets,
a difference accepted by Burkart (1944) but con-
sidered as not completely satisfactory. Hansen
(1990) concluded from his phylogenetic studies in
the Gerbera-complex (Chaptalia, Trichocline, Ger-
bera, and four small genera (Leibnitzia Cassini, Lu-
lia Zardini, Perdicium L., and Uechtritzia Freyn)),
that this complex should be ranked as a single,
large genus, but considered it premature to propose
any formal taxonomic changes. The cladogram pre-
sented by Hansen (1990) is based only on 15 char-
acters and some of these are polymorphic in his
terminal taxa. For example, the character "scape"
was considered bracteate in the genus Chaptalia,
but the scape in the new species is ebracteate as
it is in several Chaptalia species (e.g., C. integer-
rima (Vellozo) Burkart, C. nutans (L.) Polak). Chap-
talia hermogenis is included in section Archichap-
talia based on its long-petiolate leaves and shortly
decurrent, broadly ovate blades. The inclusion of
the new species enlarges the circumscription of
section Archichaptalia, because C. hermogenis has
the corolla of the inner female florets longer than
the style. The new species has an ebracteate scape,
while C. cordifolia has a scape without or with few
linear bracts. In the other species of this section
the scape is described as bracteate with few to
many bracts, and as in C. cordifolia, the corolla of
the inner female florets is described as being short-
er than the style.
Chaptalia hermogenis M. D. Moraes, sp. nov.
TYPE: Brazil. Sao Paulo: Eldorado, Nicleo
Caverna do Diabo, Parque Estadual de Jacu-
piranga, on nearest hill on the E side of the
headquarters, 24�38'41"S, 48�23'31"W, ca.
600 m alt., 5 Sep. 1996. M. D. Moraes & F
A. R. D. P Arzolla 367 (holotype, UEC; iso-
types, B, F, G, K, LP, M, MBM, MO, NY, R,
RB, SP, UPS, W). Figure 1.
Chaptalia hermogenis C. cordifoliam (Baker) Cabrera
simulat, sed differt scapo florifero semper ebracteato. fer-
rugineo-villoso praecipue ad apicem: capitulo multifloro;
involucro 15.7-21 mm longo; floribus marginalibus 16-
30 feminineis ligulato-bilabiatis exsertis, limbo 11.5-13.6
mm longo, 2-2.6 mm lato, 4-6-nervato, apice integro vel
tridentato, lobulo interno 2-laciniato, 1.7-7.3 mm longo.
rare integro; floribus feminineis internis 11-43 floribus
marginalibus similibus sed centrum versus minoribus:
flosculis femineis reductis nullis; floribus centralibus disci
24-61 masculis, corollis bilabiatis 9.2-10.5 mm longis.
limbo 3-denticulato. lobulis reflexis apice papilloso; ach-
eniis pubescentibus.
Perennial herb up to 20 cm high with a rosette
NOVON 8: 173-175. 1998.


174
Novon
D
G
E
Figure 1. Chaptalia hermogenis M. I). Moraes.-A. Habit.-B. Capitulum showing the involucre.-C. Corolla of the
outer female florets.-I), E. Corolla of the inner female florets decreasing in size toward the center.-F. Corolla of the
central functionally male florets.-G. Achene with pappus base. Based on type specimen M. I). Moraes & F A. R. ).
P. Arzolla 367 (UEC).
of basal leaves. Petiole 5.5-24 cm long, golden
brown villous-tomentose; blade (3-)5-9(-12) X
(3.5-)5-9(-11) cm, broadly to very broadly ovate,
base cordate, shortly decurrent, apex obtuse or
rounded, with minute apiculus, margin sparsely mi-
nutely denticulate; blade with 4-7 veins per side,
anastomosing, impressed above, prominent below,
upper surface initially sparsely villous, becoming
glabrous with remains of the indumentum on the
basal portion of the midvein, lower surface densely
pale golden brown villous-tomentose. Scape (12-)
16-35(-42) cm long, 1.3-2.2 mm diam., ebracte-
ate, golden brown villous, particularly at the apex;
head nodding in bud, erect at anthesis; involucre
15.7-21 mm long, campanulate; involucral bracts
in 3-4 rows, densely golden brown villous. Florets