Nelumbo Vol 59(1), (100-104) 2017 ISSN (Print) : 0976-5069 DOI : 10.20324/nelumbo/v59/2017/117142 ISSN (Online) : 2455-376X Additions of two red algae to marine macro algal flora of Kerala Coast, India S. K. Yadav, M. Palanisamy and G. V. S. Murthy Botanical Survey of India, Southern Regional Centre, Coimbatore – 641 003, Tamil Nadu, India  Corresponding author: [email protected] Hkkjr esa dsjy rV ds leqnzh; nh?kZ ’kSoky ouLifrtkr esa nks yky ’kSokyksa dk la;kstu ,l- ds- ;kno] ,e- iykuhlkeh ,oa th- oh- ,l- ewfrZ lkjka’k Ok”kZ 2011&2014 esa dsjy rV ij fd;s x;s O;kid lEkUos”k.kksa ds QyLo:Ik nks yky ‘kSokyksa ¼jksMksQk;lh½ gSyksisfYVl vkWLVªsfyl ¼ts- vx/kZ-½ th- MCY;w- lksUMlZ ¼jksMksfefu,slh½ ,oa Mk,sfl;k ¶ysftfyQsjk cksjxslu ¼Mk;sfl,slh½ ds uohu forj.kijd vfHkys[k izkIr fd;s x;s gSaA izLrqr ‘kks/k i= esa bu nksuksa tkfr;ksa ds lgh m)j.k ds lkFk izxf.kr dj] la{ksi o.kZu] izkfIr ,oa lac) tkfr;ksa ij fVIIk.k fn;k x;k gSA ABSTRACT Halopeltis australis Dasya flagellifera Comprehensive explorations conducted in Kerala coast during 2011-2014 revealed new distributional record of two Red algae (Rhodophyceae) namely (J. Agardh) G.W. Saunders (Rhodymeniaceae) and Boergesen (Dasyaceae). Both taxa are enumerated here with the correct citation, a short description, notes on its occurence aKnedy awssoorcdiaste: d species. Additions, Flora, Kerala Coast, Marine Macro Algae, Rhodophyceae INTRODUCTION 2003; Kaladharan, 2005; Sulekha & Panikkar, 2006; Nettar and Panikkar, 2009). During the present study, The state of Kerala, with its 580 km long coastline 56 species of Red seaweeds are reported from Kerala remarkably endowed with significant natural rocky coast. However, two taxa i.e. Halopeltis australis (J. landscapes which play an important role in support- Agardh) G.W. Saunders (Rhodymeniaceae) and Dasya ing seaweed vegetation. A perusal of literature reveals flagellifera Boergesen (Dasyaceae) that are collected for that many sporadic explorations has been undertaken the first time from Kerala coast, thus can be treated as to assess the seaweed resources (Nair & al., 1982; Chennubhotla & al., 1990; Mathew, 1991; Panikkar & new. Both taxa are enumerated here with the correct Ampili, 1993; Anilkumar & Panikkar, 1992, 1994, 1997; citation, a short description, notes on its occurence and Kaliaperumal & Chennubhotla, 1997; Anilkumar, associated species. Received: 04.02.2017 Accepted: 22.05.2017 Date of Publication: 31.07.2017 S. K. Yadav, M. Palanisamy and G. V. S. Murthy uniformly flattened, up to 3 mm wide, usually dicho- tomously branched, angles between branches usually acute, cartilaginous; surface smooth; margins usually entire, occasionally irregularly proliferated in apical region, proliferations up to 1 cm long; apex usually obtuse. Microscopic: Cells in surface view spherical to oval, 1.80- 4.75 µm across, thin walled, sparsely arranged. In cross section, thallus up to 435 µm thick, differentiated into outer cortex and central medullary layers; cortex mul- ti-layered, up to 95 µm thick, cells oval to spherical, 6-18 µm across, compact; medulla multi-layered, up to 200 µm thick, cells spherical to oval or slightly elongate, 20-58 µm across, progressively smaller towards periphery, thin walled. Spermatangia scattered over the surface; carpo- sporangia develop in chains; cystocarps protruding or scattered on frond surface, usually hemispherical, slightly constricted at base, up to 500 µm across; tetrasporangia develop in nemathecial sori, mostly concentrated below frond apices, usually subspherical, cruciately divided. Occurrence: Post-monsoon season. Rare. Distribution: KERALA: Kozhikode and Thiruvanantha- puram districts. INDIA: Andaman Islands, Goa, Gujarat, Karnataka, Maharashtra and Tamil Nadu. Notes: In most of the literature, this species has been tre- ated as Rhodymenia sonderi P.C. Silva. However, recently Saunder & McDonald (2010), based on the molecular study and DNA barcoding placed this taxon under the Fig. 1: Map showing Kerala coast genus Halopeltis and named as H. australis. This species usually found in association with Bry- TAXONOMIC TREATMENT opsis plumosa, Champia compressa, Dictyota dicho- toma, Gracilaria corticata and Hypnea musciformis in Halopeltis J. Agardh narrow crevices of rocks or in rock pools under heavy Halopeltis australis (J. Agardh) G.W. Saunders in G.W. surf-exposed areas in intertidal region. During the field Saunders & B. McDonald, Botany 88: 657, figs. 77. 2010. surveys, this species was collected only once from the Acropeltis australis J. Agardh Bot. Zeit. 3: 56. 1845. Rho- Thikkodi coast (Plate 1 a). dymenia australis Sond., Bot. Zeit. 3:56. 1845 (nom. illeg.); Specimens examined: KERALA: Kozhikode Distr.: Thik- K. S. Sriniv., Phycol. Ind.: 1: 22, Pl. 22. 1969; Desikachary kodi (near light house area), 08.10.2013, M. Palanisamy & & al., Rhodophyta 2 (2B): 167. 1998. Rhodymenia sonderi S. K. Yadav 129484 (MH). P.C. Silva, Cat. Benth. Mar. Alg. Ind. Ocean: 370. 1996; Kalimuthu, Stud. Indian Rhodym. 23. 2000; Oza & Zaidi, Dasya C. Agardh Rev. Checkl. Ind. Mar. Alg.: 63. 2001; Jha & al., Seaweeds Dasya flagellifera Boergesen, Biol. Meddel. Kongel Dan- Gujarat: 187. 2009; P.S.N. Rao & Gupta, Algae India 3: 52. ske Vidensk.Selsk. 11(6): 50, f. 7,8. pl. 1.1934; K.S. Sriniv. 2015. (Plate 1a-d) in Bull. Bot. Surv. India 7: 248. 1965; P.C. Silva & al., Cat. Thallus dark-purple red in colour, frondose, up to 15 Benth. Mar. Alg. Ind. Ocean: 436. 1996; Desikachary & al., cm long, bushy, erect, epilithic. Holdfast small, discoid, Rhodophyta 2 (2B): 278. 1998; Oza & Zaidi, Rev. Checkl. firmly attached. Stipe cylindrical or stalked to slightly Ind. Mar. Alg.: 75. 2001; P.S.N. Rao & Gupta, Algae India flat, 0.5-2 mm long and 180-560 µm wide. Fronds almost 3: 57. 2015. (Plate 1 e-f) 101 www.nelumbo-bsi.org Nelumbo Additions of two red algae to marine algal flora of Kerala Coast, India Plate -1: a. View of Thikkodi coast during low tide; b-d. Halopeltis australis (J. Agardh) G.W. Saunders: b. Habitat; c. Habit and closeup of thallus; d. Microscopic image showing surface cells of thallus (40×); e-f. Dasya flagellifera Boergesen: e. Microscopic image showing upper part of a young thallus (Herbarium specimen); f. Microscopic images showing profuse branching in upper part of frond (10×). 102 www.nelumbo-bsi.org Nelumbo S. K. Yadav, M. Palanisamy and G. V. S. Murthy Thallus dark to purple or pinkish red in colour and ANILKUMAR,C. AND M.V.N. PANIKKAR 1997. Indian spe- turns black after drying, filamentous, up to 10 cm long, cies of Porphyra (Rhodophyceae, Bangiales).Feddes Repert. sympodial, corticated, bushy, tufted, gregarious, densely 108 (5&6): 419-423. ANILKUMAR, C., P. SINDHU AND M.V.N. PANIKKAR 1995. and irregularly branched, erect, usually epilithic. Hold- Ecology and reproductive Phenology of Porphyra suborbicu- fast minute, inconspicuous, rhizoidal or discoid, firmly lata Kjellman (Bangiales, Rhodophyceae) from Kerala. Sea- attached on rocky substrata in intertidal regions. Stipe weed Res. Ultin. 17 (1&2): 37–50. filamentous, variable in length. Frond filamentous, pro- CHENNUBHOTLA, V.S.K., S. MATHEW AND I. JOSEPH fusely and irregularly branched with pseudolaterals; 1990. A note on the occurrence of Porphyra kanyakumarien- pseudolaterlas flagella like, 180-600 × 15-45 µm, slightly sis (Bangiales: Rhodophyta) along the Kerala coast. Seaweed curved upwards, fastigiate, deciduous in older parts Res. Utiln.13 (1): 1-4. and dense and crowded in younger parts of the thallus, DESIKACHARY, T.V., V. KRISHNAMURTHY AND M.S. BAL- polysiphonous towards base and gradually tapering and AKRISHNAN 1998. Rhodophyta Vol. II. Part–II B. Madras become monosiphonous towards apex. Science Foundation, Chennai. pp.359. Microscopic: Axial cell with 5 pericentral cells. Tetraspo- GUIRY, M.D. AND G.M. GUIRY 2016.Algae Base.World-wide rangia develop in stichidia on branches of pseudolaterals; electronic publication, National University of Ireland, Gal- stichidia ovate to oblong and gradually become subcylin- way. (http: //www.algaebase.org.). JHA, B., C.R.K. REDDY, M.K. THAKUR AND M.U. RAO drical, tetrahedrally developed. 2009. Seaweeds of India: The Diversity and Distribu- Occurrence: Summer season. Rare. tion of Seaweeds in Gujarat Coast. CSMCRI, Bhavnagar. Distribution: KERALA: Thiruvananthapuram. INDIA: pp. 215 Gujarat, Maharashtra and Tamil Nadu. Endemic to Indian KALADHARAN, P. 2005. Gracilariopsis lemaneiformis (Bory) coast (Oza & Zaidi, 2001). Dawson - a red alga reported from certain backwaters of Note: This species was originally reported by Boergesen Kerala. J. Bombay Nat. Hist. Soc.102 (3): 378. (1934) from Okha port of Gujarat coast, India. The spec- KALIAPERUMAL, N. AND V.S.K. CHENNUBHOTLA 1997. imen collected here from Kerala (Vizhinjam coast) was Seaweed distribution and resources in Kerala coast. Seaweed in very young stage and found growing in association Res. Utiln. 9 (1&2): 29–32. with Gelidium micropterum near the fresh water inlet KALIMUTHU, S. 2000. Studies on some Indian members of into sea. the Rhodymeniales. Ph.D. thesis. Bharathidasan University, Specimens examined: Thiruvananthapuram Distr.: Vizhin- Tiruchirappalli, India. MATHEW, S. S. 1991. Some Observations on the Ecology and jam coast, 13.06.2013, M. Palanisamy & S. K. Yadav Biochemical Aspects of the Seaweeds of Kerala Coast. Ph.D. 128556 (MH). thesis. Cochin University of Science and Technology, Kochi, India. ACKNOWLEDGEMENT NAIR, B. N., V. SOBHA AND M. ARUNACHALAM 1982. Algae from southern Kerala coast.Indian J. Mar. Sci.11 (3): The authors are thankful to Dr. Paramjit Singh, Director, 266-269. NETTAR, P.S. AND M.V.N. 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