K. N. Bahadur , H. B. Naithani

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K. N. Bahadur , H. B. Naithani

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Melocalamus compactiflorus is a handsome bamboo characterised by its c1imbing habit and large fleshy seeds. Commonly distributed in Bangladesh, Burma and Yunnan (China). It is known from the wild in India only from Cachar (Assam). It was erroneously transferred to the Dinochloa by McClure in 1937. After examining the authentic material this mistake has been rectified; some misidentifications have also been corrected. Although published records of the flowering of this bamboo from Burma are available, such a record from India was so far lacking. A population of this bamboo at F.R.I., Dehra Dun flowered in late 1980 which now forms the basis of this record. As per the available data the flowering cycle in this species seems to vary between 7 and 47 years. Shoes/sandals are made of the outer green fibrous layers of the culms of this climbing bamboo.

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H. B. Naithani , K. N. Bahadur

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A bamboo species new to to seience, Dendrocalamus sahnii Naithanl&Babadur, is deseribed from Subansiri district, Arunachal pradesh, India. It Is allied to Dendrocalamus hamiltonii Nees et Arn. Ex Munro, but differs In having much thinner culms, toothed or fimbriate ligule of culm sheaths, larger spikelet, yellow anthers with a short hairy point and a single stigma. The taxon Is dedicated to Prof. K.C. Sahni, Ex-Forest Botanist and Director Biological Reaearch (Retd.), Forest Research Institute and Colleges, Dehra Dun.

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H. B. Naithani , K. N. Bahadur

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The paper presents observations made on extended distribution of 31 new and rare/endemic taxa of the north-eastern region of India during the course of the last few decades. New taxa here signify those species and varieties which have been described after the publication of Hooker's Flora of British India. In most cases these taxa were known only by their type collections until they have been collected recently from outside their type localities, invariably from Arunachal Pradesh. These are: Agapetes similis, Albizia gamblei, Beilschmiedia pseudo-micropora, Crotalaria bhutanica, Dalbergia c1arkei, Dicentra paucinervia. Diospyrus cacharensis, Dysoxylum reticulatum, Gaultheria seshagiriana, Gomphogyne macrocarpa, Gymnocladus assamicus, Hydrocotyle himalaica, Indofevillea khasiana, Luculia grandfolia, Mitrephora harae, Paris polyphylla var. appendiculata, Phyllostachys assamica, Pinus bhutanica, Populus gamblei, Primula bhutanica, P. irregularis. P. scapigera, Rhodermachera siniea, Rhododendron dalhousiae var. Rhabdotum, Rhynchoglossum lazulinum, Salacia khasiona, Salix bhutanersis, Senedo baril, Spermacoce latifolia, Symplocos glauca and Syzygium assamicum. Besides, 3 new rare tree species viz. Albizia arunachalensis, Lithocarpus kamengensis and Rhudodendron tawangensis, which have recently been described from Arunachal Pradesh, are also highlighted. About 50% of these taxa have been collected after a lapse of 30 years or more. This fact as well as the other information contained in the paper given indication of the extent of rarity of these plants and would therefore help in taking measure to conserve them if necessary.

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H. B. Naithani , K. N. Bahadur

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Vulpia ciliuta Link, a grass of Mediterranean Europe, Western & Central Asia and North Africa, is recorded for the first time from India. It was collected at Nal Dehra, Disrict Simla (Himachal Pradesh) by a student of the Punjab University, Chandigarh. Notes on its nomenclature, description, habitat, distribution, etc., along with an illustration are provided to facilitate determination of this alien grass The Specimen is deposited in Herbarium DD.

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K. N. Bahadur , S. S. R. Bennet

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A new species of Wrightia (Apocynaceae) viz. W. dolichocarpa Bhadur & Bennet sp. nov. is described from Nagarhaveli in Western India. It is allied to W.tinctoria R. Br. The latex from fruits is used by the cow-boys for making instant curd ia the field. It is a well-known plant in the area and is locally called dudh kudi.

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S. S. R. Bennet , K. N. Bahadur

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The Identity of Xylia spp. Of the Indo-Burmese region has been in a state of confusion. It was believed that the source of the well known Burmese timber pyinkado was X. dolubriformis and that the Indian timber irul, which is slightly inferior, was obtained from X. xylocarpa. The remaining species X. kerrii was not clearly understood. A critical study of the herbarium specimens in DD revealed that besides certain other diagnostic characters, the Indian and Burmese material invariably had gland-crested and eglandulose anthers, respectively. This, along with a review or literature, led to the conclusion that while the Indian species (irul) was no doubt X. xylocarpa, the Burmese species was iafact X. kerrii and not X.dolabriformis. Further, it became obvious that X. dolabriformis was a superfluous name for X.-xylocarpa whose distribution did not extend to Burma and tbat the only speciea indigenous to Burma, which produced pyinkado, was X.kerrii. Under its supposed name X.dolabriformis, the Burmese X. kerrii has been introduced, in the past, in Dehra Dun. and the trees are doing exceedingly well, It may be worthwhile to raise it in plantations in the Sub.Himalayan tract because pyinkado is superior to irul.

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S. K. Purkayastha , K. N. Bahadur

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Corneveceue a heterogeneous family. Except tor the genus Cornus, all other Indian genera previously dealt with under this family have been transferred to small segregate families: Alangium has been shifted to Alangiaceae, Mastixia to Mastixiuceae, Acuba to Aucubaceae, Nyssa to Nyssaceae, Toricellia to Toricelliaceae and Helwingin to Helwinjiaceae. Leaving out the Mastixiaceae, this segregation, on naorphological and wood anatomical grounds, appears to be justified. The persent study indicates that the last named should he regarded as a subfamily Mastixioideae under the Cornaceae. The characteristics and the main pointa or difference between the Cornaceae and the segregate families are discussed. The genua Cornus has been delimited in different ways by various workers, some accepting the genus in a broad sense and dividing it into sub-genera and sections, other sagregating these groups as distinct genera. The characters used for sub-dividing Cornus do not seem to be sufficient for recognising the segregate genera. The genus has, therefore, been divided into 8 sub-genera whose characters are furnished. The distinguishing features of the Indian species together with their relevant synonyms and distribution are also given.

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K. N. Bahadur , H. B. Naithani

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Cephalostachyum pergracile munro, a handsome bamboo native to Burma, Nagaland, Assam and Chota Nagpur, is recorded for the first time from Madhya Pradesh. The specimen was received from the Working Plan Officer, South Balaghat Division. Based on this collection as well as another from Kakinada. Andhra Pradesh, it is pointed out that this species is gradually extending its range of distribution in India from east to west and south-west. To facilitate its identification in the field, brier description together with notes on spot characters, phenology, up to date distribution, introduction, ecology and economic uses are given. An illustration is also provided.

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K. N. Bahadur

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K. N. Bahadur , Nizamuddeen Hyder

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K. N. Bahadur , H. B. Naithani

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Richardia scabra Linn. (Rubiaceae), a native of tropical America and now naturalised in many parts of the world, has hitherto been reported in India from Assam, Meghalaya, Andbra Pradesh and Rajasthan. It is now recorded from Uttar Pradesh, Bihar and Mysore States. Notes on its previous records from India and other tropical countries, nomenclature (genus as well as species), description, distribution, ecology, economic uses and affinities are provided with illustrations.

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K. N. Bahadur , R. C. Gaur , K.C. Sahni

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The paper records the occurrence of Gloehidion montanum Thw., a tree of the family Euphorbiaceae, in India. It was collected from forests of Goa in the Western Ghats. So far, the species was considered endemic to Sri Lanka. Brief notes on nomenclature, description, infraspecific and interspecific differences, phytogeography, a key for identification and an illustration are provided.

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K. N. Bahadur

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The Indian Quercus incana Roxb. (1832) is a later homonym of the American Q. incana Bartr (1791). The former, therefore, has to be renamed. A scrutiny of the synonyms mentioned in literature for this oak reveals that the names Q. lanata Sm. (1814), Q. oblongata D. Don (1825) and Q. dealbata Wall. (1831) are not tenable for one reason or another. Q. leucotrichophora A. Camus nom. Subnud. (1935), the only other alternative name available for the Indian species, is being validated and proposed here as an avowed subtitute.

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