Xerophyte Caralluma
stalagmifera var. longipetala(Asclepiadaceae): a new record to the flora of Karnataka, India
M. Ramachandra Naik 1 & Y.L. Krishnamurthy 2
1,2 Department of
Applied Botany, Kuvempu University, Shankaraghatta, Karnataka 577451, India
Email: 1 rcnaik1@gmail.com, 2murthy_ylk@yahoo.co.in (corresponding author)
Date of publication (online): 26 June 2012
Date of publication (print): 26 June 2012
ISSN 0974-7907 (online) | 0974-7893 (print)
Editor:N.P. Balakrishnan
Manuscript
details:
Ms # o2898
Received 31 July 2011
Final received 28 March 2012
Finally accepted 21 May 2012
Citation: Naik,
M.R. & Y.L. Krishnamurthy (2012). Xerophyte Caralluma stalagmifera var. longipetala (Asclepiadaceae): a new record to
the flora of Karnataka, India. Journal
of Threatened Taxa 4(6): 2656–2659.
Copyright: © M.
Ramachandra Naik & Y.L. Krishnamurthy 2012. Creative Commons Attribution
3.0 Unported License. JoTT allows unrestricted use of this article in any
medium for non-profit purposes, reproduction and distribution by providing
adequate credit to the authors and the source of publication.
Acknowledgements: The authors are thankful to Prof. T. Pullaiah,
Department of Botany, Sri Krishnadevaraya University, Anantapur (A.P.), for
encouragement and conformation of plant identification. Thanks are also due to
S. Karuppusamy, Department of Botany, Madura College, Madurai (TN) for helping
with identification of the specimens.
For figures, images -- click here
Caralluma R. Br is a xerophytic
succulent genus of Asclepiadaceae (sometimes treated as subfamily Asclepiadoideae
of family Apocynaceae) and include about 120 taxa, with distribution in Africa,
Asia, South Africa and southwestern Europe and Saudi Arabia (Move & Liede
2002). Gilbert (1990) carried out
comprehensive studies of Carallumaspp. wherein he categorized 57 species in several subgenera.
Later, Plowes (1995) divided the genus Caralluma into 17 genera based on morphological
studies. Among them, six were
monotypic. Recently, Meve &
Leide, (2004), using molecular studies based on cladistic analysis demonstrated
that the smaller units of Carallumaspp., compared well with that of morphologically divergent and
geographically distributed races.
In India, it is
represented by 13 species and five varieties (Jagtab & Singh 1999). Sharma
et al. (1984)
treated the genus Caralluma,with five species and two varieties, in flora of Karnataka
analysis. Kushalappa (1996)
recorded Caralluma adscendens(Roxb.) Haw. along with C.
adscendens var. attenuataand C. umbellatafrom Tumkur District of Karnataka. Gravely & Mayuranathan, (1931) discussed the morphological
differences between C.
adscendens var. attenuata& C. adscendensvar. fimbriata. Caralluma nilagirianawas a new species reported (Kumari & Rao 1976) from Nilgiri Hills and is
considered endemic to Tamil Nadu (Ramachandran et al. 2011). Bhaskar & Kushalappa, (1989)
reported Caralluma
nilagiriana as a new record from Karnataka and their specimens
are deposited in UAS Herbarium, GKVK, in Bangalore. Plowes (1995) transferred C. nilagiriana into Boucerosia nilagiriana (Kumari & Subba Rao)
Plowes. Caralluma campanulata (Wight)
N.E.Br. (=Boucerosia
campanulata, Wight) is now considered as synonym of Boucerosia umbellata(Roxb.) Wight & Arn. Similarly, C.
umbellata (Roxb.) Haw. is a synonym of Boucerosia lasianthaWight. Boucerosia truncato-coronataSedgewick is considered as endemic to Darwar District in Karnataka.
In this report, we
surveyed the eastern part of north to southern interior areas of Karnataka, and
collected specimens which are maintained at the herbarium in the Department of
Botany, Kuvempu University. We
collected a few interesting specimens of Carallama sp. from Chitradurga District of
Karnataka. The specimens were
identified as C. stalagmiferabut differed in certain floral characters. Caralluma
stalagmifera was described by Fischer in 1925
from Vandalur near Madras (Chennai). Saldanha & Nicolson (1976) recorded it in the flora of Hassan and
Seetharam et al. (2000) included it in the flora of Gulbarga in Karnataka.
Karuppusamy &
Pullaiah (2007) first reported a new variety of C. stalagmifera var. longipetala from near Madurai airport in Tamil
Nadu. This species has so far not
been reported from Karnataka. The
identity of our specimen is revealed as C. stalagmifera var. longipetala which is a new addition
for the flora of Karnataka (Image 1).
Caralluma stalagmifera var. longipetala Karup.
& Pull.
Karuppusamy & Pullaiah (27968) SKU; Tamil Nadu,
Madurai District, waste lands near airport, 28.vii.2005 (Holotype, SKU;
Isotypes, MH).
Specimen
examined: 20.ii.2010,
Kuvempu University, Shankaraghatta, Shivamogga District, Karnataka, India,
KUABM 1004, KUABM 1005 and KUABH 1006, (Herbarium, Department of Applied Botany (KU), Bioscience
complex).
Distribution: India, Karnataka, Chitradurga District, Holalkere
Thaluk, Ramagiri hobli, Hosabeelu (13051’25”N & 76007’45”E)
and Muddapura Village (13053’111”N & 76006’328”E)
region (Fig. 1). Caralluma stalagmiferavar. longipetalais found on steep rock-faces on the lower parts of hilly areas near Ramagiri, a
small town, where it is rare in distribution.
Caralluma stalagmifera var. longipetala occur
along with other plant species like, Euphorbia
antiquorum, Ceropegia sp., Opuntia sp., Canthium parviflorum, Dodonea viscosa, Lantana camara and Barleria buxifolia,etc.
Plant
Description: Plants
growing up to 25–40 cm tall, in dense clumps, with clear exudates; stems
succulent, acute, quadrangular, 1–2 cm wide, greyish-green with brown
mottling and whitish ribs. Leaves
tooth-like, acute, sessile 4–5 x 0.5–1 mm, fleshy, glabrous (Fig.
2). Flowers axillary, solitary;
bracts large, triangular; pedicels up to 15mm long and 1mm in diameter, slender,
glabrous; calyx five-lobed, divided up to base; corolla deeply divided, rotate,
ca 12mm long, 8mm across; lobes ovate-lanceolate, dark purple with purplish
yellow tips, after 8–12 days flower colour changes to brownish-green,
basal parts of some flowers light pale yellowish with dark markings at the
petal; spindle shaped hairs present along the margins and apex (Image 1);
corona staminal, biseriate; outer lobes 2, erect, linear-lanceolate; pollinia
5, pollen masses solitary in each anther cell, pollinaria-D-shaped, yellow,
waxy, attached by dark brown caudicles; gynostegium ca 2.5mm long. Follicles paired, terete, purplish
streaked, 10–13
x 0.5–1 cm, tapering towards apex; old dehisced follicles glabrous (Image
2).
Flowering
and fruiting: December - June
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