New
population of Cycas sphaerica Roxb. (Cycadaceae) discovered in PinjarikondaReserve Forest, Andhra Pradesh, India
J. Prakasa Rao 1, M. Ravi Kumar 2, V. Satya Ramachandra Rao 3, O. Aniel Kumar 4 & M. Venkaiah 5
1,4,5 Department of Botany, Andhra University, Visakhapatnam, Andhra Pradesh
530003, India
2,3 Department of Botany (P.G.), V.S.M. College, Ramachandrapuram, East Godavari District, Andhra Pradesh 533255, India
1 jprakasarao@gmail.com (corresponding author), 2 ravimkumar28@gmail.com,3 smartsathyam@yahoo.com, 4 owkanielkumar@yahoo.com,5 venkaiah_botany@rediffmail.com
doi: http://dx.doi.org/10.11609/JoTT.o3370.5871-4
Editor: Ravi
Prasad Rao, Sri KrishnadevarayaUniversity, Anantapur, AndhraPradesh. Date of
publication: 26 June 2014 (online & print)
Manuscript details: Ms #
o3370 | Received 22 June 2013 | Final received 23 May 2014 | Finally accepted
27 May 2014
Citation: Rao,
J.P., M.R. Kumar, V.S.R. Rao,
O.A. Kumar & M. Venkaiah (2014). New population of Cycas sphaerica Roxb. (Cycadaceae) discovered in Pinjarikonda Reserve Forest, Andhra Pradesh, India. Journal
of Threatened Taxa 6(6): 5871–5874; http://dx.doi.org/10.11609/JoTT.o3370.5871-4
Copyright: © Rao et al. 2014. Creative Commons Attribution
4.0 International License. JoTT allows
unrestricted use of this article in any medium, reproduction and distribution
by providing adequate credit to the authors and the source of publication.
Funding: None.
Competing Interest: The
authors declare no competing interests.
Acknowledgements: Authors are
thankful to forest range officers in Sudikonda and Addateegala forest ranges, also grateful to local people
for their help during field studies and in the collection of plant materials.
For figures, images -- click here
Cycas is a single genus of the family Cycadaceae consisting of 100 species. It is the sole living cycad group
occurring in Asia (Lindstrom & Hill 2007). Nine taxa, namely, C. beddomei Dyer, Trans., C. circinalis L., C. indica Lindstrom & Hill, C. sphaerica Roxb., C. annakailensis R.
Singh & P. Radha, C. nathorstii J. Schust., C. pectinata Buch.-Ham. C. zeylanica (J. Schust.)
A. Lindstrom & K.D. Hill and C. swamyi Singh
& Radha are reported in India (Lindstrom &
Hill 2007; Singh & Radha 2008; Singh & Singh
2011); two species C. swamyi Singh & Radha and C. annakailensis R.
Singh & P. Radha are considered synonyms of C.circinalis L. and C. sphaerica Roxb., respectively (Ranjay et al. 2010), hence seven species are presently
recognized in India. C. sphaerica was first mentioned
by Roxburgh in 1814, and described in 1832 (Lindstrom & Hill 2007). As reported by Raju in (2006) C. sphaerica Roxb. ismorphologically similar to C. circinalis L. in most respects but differs in certain characters such as megasporophyll structure.
C. sphaerica Roxb. isendemic and distributed along the hilly tracts of Eastern Ghats of northern
Andhra Pradesh, Odisha, Tamil Nadu and Karnataka
(Reddy et al. 2007; Varghese & Krishnamurthy 2010). In Andhra Pradesh,
it is found occasionally in dry deciduous forests in northernmost part of Srikakulam District and woodlands of Palakonda,Donubayi and Seetampetareas (Reddy et al. 2007). A
population of more than 500 trees exists at JalanthrakotaReserve Forest in the low elevation deciduous forest in SrikakulamDistrict (Raju et al. 2009). In Odisha,
these are occasionally found in the woodlands of Gajapathi,Ganjam, Khurda, Cuttack andDhenkanal districts; sparse in moist deciduous
forests of Phulbani, Boudh,Nayagarah, Angul, Keonjhar and Mayurbhanj districts
(Reddy et al. 2007). In the flora
of Srikakulam District it was mentioned under the
name of C. circinalis L. (Rao& Sreeramulu 1986). It is listed in IUCN as Data Deficient
and is included in CITES Appendix II (Varghese & Krishnamurthy 2010).
In Eastern Ghats there are three Cycasspecies among which C. beddomei,is endangered (Rao 2010), a global endemic
species and known only from Seshachalam Hills in
Andhra Pradesh. C. circinalis L. is restricted to
the Western Ghats and some parts of Eastern Ghats in Andhra Pradesh and Tamil
Nadu.
PinjarikondaReserve Forest (2282.90ha) is located between 17026’–17028’N
& 81059’–82001’E Eastern Ghats in East Godavari
District, Andhra Pradesh, India (Fig. 1). The forest located in Addateegala (452.82ha)
and Sudikonda (1830.08ha) forest ranges a perennial
stream of the Pinjarikonda waterfall flowing along
the forest. Elevation range is from
100–456 m. Red sandy soil, khondalite type rocks are present in the study area. Vegetation type is the tropical dry
deciduous forest.
The overall population size of C. sphaerica Roxb. is not known (Varghese & Krishnamurthy
2010). Detailed survey and documentation of geographical distribution of
the native cycad taxa, their pests and diseases is urgently needed (Muniappan & Virakatamath2006). Endemic plants are more
prone to extinction for various reasons as they are habitat specific. Because of unstable habitats, in a small
area with a limited population they are extra stressed. Therefore, such endemics must be
prioritized for conservation efforts (Rawat2009). Indian cycads are threatened
largely as a result of human activities (Singh & Singh 2011).
Materials and Methods: C. sphaerica Roxb. specimens were
collected and observed during the period of April 2010 to June 2011 from Pinjarikonda Reserve Forest and identified with the help of
the floras and literature (Lindstrom & Hill 2007; Reddy et al. 2007) at the
time of our explorations in East Godavari District. The voucher specimen (AU (B.D.H.) JPR-20298) is deposited at the Herbarium
of Botany Department, Andhra University.
Results: Cycas sphaerica Roxb.
Fl. Ind.: 747 (1832). Type: ex hort. Calcutta, Roxburgh s.n.,
1808 (lecto BM, fide Hill 1995). C. circinalis var. orixensisHaines, Bot. Bihar Odisha6: 1228 (1924). Type: India, Odisha,Mals of Puri, Haines 5876, June1917 (syn. K); Angul,
Haines 5877, July 1917 (syn. K). C. annakalensisSingh & Radha, Brittonica58.119.2006. (syn. now).
Small palm like tree up to 5m tall, dioecious(Image 1 c,j), usually
female plants posses branches, stems are arborescentwith a girth up to 135cm. Bark is
thick with alternate bands of scars on persistent leaf bases and
cataphylls. Leaves are pinnate,
dark green, semiglossy, 95–160 cm, leaflets 55–215 and are generally produced in the
season before cone formation. The
median leaflets are simple, weakly discolored, they are 13–21 cm long and 7–12 mm wide with a
soft acuminate apex. Cataphylls are narrowly triangular soft, thinly sericeous or lacking tomentum. Usually cones are formed from May to
August. Male cones are orange colored,narrowly ovoid with spirally arranged numerous dorsiventral microsporophylls (Image 1 d–i). Female cones are loosely packed with megasporophylls. Megasporophyllsare 20–25 cm long, lamina lanceolate, apical
spine distinct from lateral spines, persistently orange-tomentosewith four glabrous ovules (Image 1 k,l). Matured seeds are subglobose or globose (Image 1 m,n) with yellow sarcotesta, sclerotesta smooth.
Populations of 700 individuals were observed in PainjarikondaReserve Forest at Pinjarikonda waterfall (Image 1 a,b). Aged individuals were found scattered on
the hill top of PotulakondaHill at an altitude of 456m, while young and newly emerging individuals were
found along the stream bank of Pinjarikonda waterfall
beside the Potulakonda Hill. C. sphaerica Roxb. is locally called ‘Kodada chettu’, because of this reason PotulakondaHill is also called ‘Kodadakonda’. This is the second distribution record
from Andhra Pradesh.
Some threats like forest fire, collection of male cones and collection
of tender leaves were observed in the location. Tender leaves are used as a leafy
vegetable and male cones are placed in their house, it is believed to protect
their families from evil spirits.
Discussion: From East Godavari District one or two Cycas plants were observed by Rolla Seshagiri Rao in 1947 along the
dense forest and reported as C. circinalis L.
from Maredumilli and Dummakondaareas (Rao et al. 1999). There is no information on Cycas sphaerica Roxb. from the study area, this is
the first distributional record form the East Godavari District. Distribution of this
species from the Eastern Ghats of Andhra Pradesh and Odishawas reported by Singh & Singh (2011). Present exploration enhances the
distributional area of this species in Andhra Pradesh (Fig. 1).
Conclusions: The present habitat of C. sphaerica Roxb. has provided extended distribution of this species in the
Eastern Ghats of Andhra Pradesh. This species may be present in other localities of the East Godavari
District, so further studies need to be carried out with concerns on
distribution, population size and threats to the habitat in the present
location as well as other areas of the Eastern Ghats where it is
available. The present location Pinjarikonda Reserve Forest is
the suitable for in situ conservation of this species and investigatethe need to introduce this species into the botanical gardens for ex situ conservation
practices.
References
Lindstrom, A.J. & K.D. Hill. (2007). The genus Cycas (Cycadaceae)
in India. Telopea 11(4): 463–488.
Muniappan, R. & C.A. Viraktamath(2006). The Asian Cycad Scale Aulocaspis yasumatsui, a threat to native cycads in India. Current Science 91: 168–170.
Raju,
A.J.S. (2006). Ecology and
conservation aspects of endemic and endangered Cycas species in the Eastern Ghats. ENVIS-SDNP Newsletter, Special
Issue p.7.
Raju, A.J.S. & K.H. Jonathan (2010). Anemophily, accidental cantharophily,
seed dispersal and seedling ecology of Cycas sphaerica Roxb.(Cycadaceae), a data-deficient red-listed species of
northern Eastern Ghats. Current Science 99:
1105–1111.
Raju,
A.J.S., K.S. Rao & N.G. Rao(2009). Association of Indian
Stingless Bee, Trigona iridipennis Smith (Apidae: Meliponinae)
with Red-listed Cycas sphaerica Roxb. (Cycadaceae).Current Science 96: 1435–1436.
Ranjay, K.S., R.C. Srivastava & T.K. Mukherjee
(2010). Three bioculturally important gymnosperms of India. Indian Journal of Traditional Knowledge 9(3): 430–431.
Rao,
B.R.P. (2010). Cycas beddomei. In: IUCN 2013. IUCN
Red List of Threatened Species. Version 2013.1. <www.iucnredlist.org>.
Downloaded on 05 July 2013.
Rao, R.S. & S.H. Sreeramulu(1986). Flora of Srikakulam District, Andhra Pradesh, India. Indian Botanical Society, Meerut, 640pp.
Rao, R.S., S. Sudhakar& P. Venkanna (1999). Flora of East Godavari District. INTACH, A.P. State Chapter, Hyderabad, 947pp.
Rawat, D.S. (2009). A presumed extinct endemic alpine herb Gentiana tetrasepala rediscovered
after 123 years: will it survive? National Academy Science
Letters 32: 169–172.
Reddy, C.S., K.S. Rao, C. Patanaiak,
K.N. Reddy & V.S. Raju (2007). Cycas sphaerica Roxb. A little known endemic species from Eastern
Ghats, India. Journal of Plant Sciences 2(3):
362–365.
Singh, R. & K.J. Singh (2011). The importance of Odisha Cycas in India. Biodiversity 12(1):
21–27; http://www.dx.doi.org/10.1080/14888386.2011.574424
Singh, R. & P. Radha(2008). A new species of Cycas (Cycadaceae)
from Karnataka, India. Botanical Journal of the LinneanSociety 158: 430–435; http://www.dx.doi.org/10.1111/j.1095-8339.2008.00924.x
Varghese, A. & V. Krishnamurthy (2010). Cycas sphaerica.
In: IUCN 2013. IUCN Red List of Threatened Species.Version 2013.1. <www.iucnredlist.org>.
Downloaded on 05 July 2013.