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Ancistrocladaceae
GH: 00013403 Ancistrocladus attenuatus Dyer Myanmar: Tenasserim J. W. Helfer
Apocynaceae
A: 02115049 Chonemorpha verrucosa (Blume) D. J. Middleton India: in Bengalia circa Calcuttam J. W. Helfer 1836
A: 02115579 Epigynum griffithianum Wight India: Hab. in Bengalia circa Calcuttam J. W. Helfer 1836
A: 02382819 Pottsia laxiflora (Blume) Kuntze India: West Bengal India orientalis, in Bengalia circa Calcutta... J. W. Helfer 1836
Aspidiaceae
A: 00021792 Polybotrya helferiana Kunze India: In Bengalia circa Calcuttam J. W. Helfer 1836
Asteraceae
GH: 02250855 Melanthera biflora (Linnaeus) Wild : India: Tenasserim and Andamans. J. W. Helfer 31851
Brassicaceae
GH: 00971860 Pteroloma triquetrum Bentham Myanmar: Tenasserim and Andaamans J. W. Helfer 1648
Caesalpiniaceae
GH: 00059775 Bauhinia diptera Blume ex Miquel India: Tenasserim and Andamans J. W. Helfer 1880 1861
GH: 00059775 Bauhinia glabrifolia maritima K. Larsen & S. S. Larsen India: Tenasserim and Andamans J. W. Helfer 1880 1861
GH: 00059775 Phanera sp. India: Tenasserim and Andamans J. W. Helfer 1880 1861
Casuarinaceae
GH: 02245685 Casuarina equisetifolia Linnaeus : India: Tenasserim and Andamans. J. W. Helfer 49851
Connaraceae
GH: 00046982 Ellipanthus helferi Hooker f. India: Tenasserim and Andamans J. W. Helfer 1251
Cucurbitaceae
GH: 00251566 Gymnopetalum chinense (Loureiro) Merrill India: West Bengal Kolkata: Circa Calcuttam J. W. Helfer 36 1836
GH: 00251572 Gymnopetalum chinense (Loureiro) Merrill India: West Bengal Bot. Gardens of Calcutta and Serampore J. W. Helfer 1834
GH: 00251566 Trichosanthes costata Blume India: West Bengal Kolkata: Circa Calcuttam J. W. Helfer 36 1836
GH: 00251572 Trichosanthes costata Blume India: West Bengal Bot. Gardens of Calcutta and Serampore J. W. Helfer 1834
GH: 00261580 Zehneria indica (Loureiro) Keraudren India: West Bengal Kolkata: In Bengalia circa Calcuttam J. W. Helfer 1836
Cyperaceae
GH: 02261324 Cyperus cyperoides (Linnaeus) Kuntze India: West Bengal Kolkata: [data not captured] J. W. Helfer 164 1836
Davalliaceae
GH: 02507881 Davallia divaricata Blume Malaysia: Semenanjung Malaysia: [no additional data] J. W. Helfer
Dipterocarpaceae
GH: 00872318 Hopea helferi (Dyer) Brandis Myanmar: Tenasserim and Andamans [protologue: "Mergui... J. W. Helfer 716/1
GH: 00872318 Shorea sp. Myanmar: Tenasserim and Andamans [protologue: "Mergui... J. W. Helfer 716/1
GH: 00135199 Vatica faginea Dyer Myanmar: Tenasserim [Mergui] J. W. Helfer 717
GH: 00014582 Vatica faginea Dyer Myanmar: Tenasserim [Mergui] J. W. Helfer 716/x
GH: 00135200 Vatica faginea Dyer Myanmar: Tenasserim [Mergui] J. W. Helfer 718/x
GH: 00872318 Vatica helferi Dyer Myanmar: Tenasserim and Andamans [protologue: "Mergui... J. W. Helfer 716/1
GH: 00135199 Vatica odorata odorata Myanmar: Tenasserim [Mergui] J. W. Helfer 717
GH: 00014582 Vatica odorata odorata Myanmar: Tenasserim [Mergui] J. W. Helfer 716/x
GH: 00135200 Vatica odorata odorata Myanmar: Tenasserim [Mergui] J. W. Helfer 718/x
Dryopteridaceae
A: 00021792 Bolbitis appendiculata (Willdenow) K. Iwatsuki India: In Bengalia circa Calcuttam J. W. Helfer 1836
Elaeocarpaceae
GH: 01830172 Elaeocarpus griffithii (Wight) A. Gray : Asia: Tenasserim and Andamans. J. W. Helfer 714
Euphorbiaceae
GH: 00095533 Agrostistachys indica Dalzell : India: Tenasserim and Andamans J. W. Helfer 4921
GH: 00095533 Agrostistachys indica longifolia Müller Argoviensis : India: Tenasserim and Andamans J. W. Helfer 4921
GH: 00095533 Agrostistachys indica subintegra Pax & K. Hoffmann : India: Tenasserim and Andamans J. W. Helfer 4921
GH: 00095533 Agrostistachys sp. : India: Tenasserim and Andamans J. W. Helfer 4921
GH: 00257853 Bridelia sp. India: Tenasserim and Andamans J. W. Helfer
A: 00048376 Mallotus helferi Müller Argoviensis India: India orientalis, in Bengalia circa Calcutta... J. W. Helfer 181 1836
A: 00048376 Mallotus peltatus (Geiseler) Müller Arg. India: India orientalis, in Bengalia circa Calcutta... J. W. Helfer 181 1836
Fabaceae
GH: 00971860 Tadehagi ademae H. Ohashi Myanmar: Tenasserim and Andaamans J. W. Helfer 1648
GH: 00971860 Tadehagi auriculatum (de Candolle) H. Ohashi Myanmar: Tenasserim and Andaamans J. W. Helfer 1648
Hydrocharitaceae
GH: 00255430 Blyxa India: West Bengal Kolkata: Hab. in Bengalia circa Calcuttam J. W. Helfer 1936-8-13
GH: 00255430 Vallisneria Linnaeus India: West Bengal Kolkata: Hab. in Bengalia circa Calcuttam J. W. Helfer 1936-8-13
GH: 00255430 Vallisneria spiralis Linnaeus India: West Bengal Kolkata: Hab. in Bengalia circa Calcuttam J. W. Helfer 1936-8-13
Lentibulariaceae
GH: 01977183 Utricularia uliginosa Vahl Myanmar: Tenasserim and Andamans. J. W. Helfer 4078 1862
Lythraceae
A: 00003403 Lagerstroemia tomentosa C. Presl Myanmar: Moulmein J. W. Helfer 30 1837-11
A: 00003404 Lagerstroemia tomentosa C. Presl Myanmar: Moulmein J. W. Helfer 257 1837-11
GH: 00003405 Lagerstroemia tomentosa C. Presl Myanmar: Moulmein J. W. Helfer 257 1837-11
Melastomataceae
GH: 00071657 Allomorphia umbellata Hooker f. ex Triana India: Tenasserim and Andamans J. W. Helfer 2260
GH: 00072607 Memecylon grande merguica C. B. Clarke : Asia: Tenasserim [Myanmar] and Andamans [Ind... J. W. Helfer 2331
GH: 00071657 Oxyspora umbellata (Hooker f. ex Triana) J. F. Maxwell India: Tenasserim and Andamans J. W. Helfer 2260
GH: 02515511 Pternandra sp. Myanmar: Tenasserim and Andamans. J. W. Helfer 2277
Myrsinaceae
GH: 00106617 Ardisia helferiana Kurz Myanmar: Tenasserim J. W. Helfer 3589
GH: 00025248 Ardisia insularis Mez : J. W. Helfer 3580
Myrtaceae
GH: 00069438 Eugenia pellucida Duthie Myanmar: Tenasserim J. W. Helfer 2406
GH: 02425645 Syzygium zeylanicum (Linnaeus) de Candolle : Southeast Asia: Tenasserim and Andamans. J. W. Helfer 2365
Opiliaceae
GH: 00035919 Cansjera helferiana Valeton Myanmar: Tenasserim J. W. Helfer
GH: 00035919 Cansjera parviflora Kurz Myanmar: Tenasserim J. W. Helfer
GH: 00035918 Cansjera parviflora Kurz Myanmar: Tenasserim J. W. Helfer
Orchidaceae
AMES: 02386396 Bulbophyllum odoratissimum (Smith) Lindley India: West Bengal India orientalis, in Bengalia circa Calcutta... J. W. Helfer 1836
AMES: 00099637 Gymnadenia helferi H. G. Reichenbach India: Bangalia circa Calcuttam J. W. Helfer 137 1836
AMES: 00099636 Gymnadenia helferi H. G. Reichenbach India: Bangalia circa Calcuttam J. W. Helfer 137 1836
Phyllanthaceae
GH: 00062369 Cleistanthus helferi Hooker f. India: J. W. Helfer 4886
GH: 00257853 Cleistanthus helferi Hooker f. India: Tenasserim and Andamans J. W. Helfer
Piperaceae
GH: 01936242 Piper peepuloides Roxburgh India: Tenasserim and Andamans J. W. Helfer 4411
GH: 01936443 Piper sp. India: Tenasserim and Andamans J. W. Helfer 4425
Plantaginaceae
GH: 00078608 Limnophila helferi Hooker f. Myanmar: Tenasserim J. W. Helfer 3942
Rosaceae
GH: 00032458 Pygeum capitellatum Hooker f. Myanmar: Tenasserim J. W. Helfer 2053
Rubiaceae
A: 00094989 Aulacodiscus premnoides Hooker f. : India: Tenasserim and Andamans J. W. Helfer 2938
GH: 00518607 Hedyotis helferi Hooker f. : India: Tenasserim [Myanmar] and Andamans [In... J. W. Helfer 2909
GH: 00518607 Hedyotis sp. : India: Tenasserim [Myanmar] and Andamans [In... J. W. Helfer 2909
GH: 00518607 Oldenlandia helferi (Hooker f.) Kuntze : India: Tenasserim [Myanmar] and Andamans [In... J. W. Helfer 2909
A: 00094989 Pleiocarpidia enneandra (Wight) K. Schumann : India: Tenasserim and Andamans J. W. Helfer 2938
GH: 00094793 Wendlandia glomerulata Kurz Myanmar: Tenasserim and Andamans [Tenasserim River, M... J. W. Helfer 2838
Rutaceae
GH: 00105586 Maclurodendron porteri (Hooker f.) T. G. Hartley India: Tenasserim and Andamans J. W. Helfer 1192
GH: 00105586 Melicope heliferi Hooker f. India: Tenasserim and Andamans J. W. Helfer 1192
Sapindaceae
GH: 00050759 Guioa diplopetala (Hasskarl) Radlkofer India: Tenasserim or the Andamans J. W. Helfer 993
GH: 00050762 Guioa diplopetala (Hasskarl) Radlkofer India: Tenasserim or the Andamans J. W. Helfer 983
GH: 00050759 Guioa fuscidula Kurz India: Tenasserim or the Andamans J. W. Helfer 993
GH: 00050762 Guioa squamosa lineolato-punctata Radlkofer India: Tenasserim or the Andamans J. W. Helfer 983
GH: 00051020 Xerospermum intermedium Radlkofer India: Tenasserim or Andaman Islands J. W. Helfer 1005
Symplocaceae
GH: 00078082 Symplocos leiostachya Kurz Myanmar: Tenasserim J. W. Helfer 3656
Tiliaceae
GH: 00052282 Brownlowia helferiana Pierre India: Tenasserim and Andamans J. W. Helfer 624