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We describe a new Hoya species from Central Kalimantan, H. buntokensis, and a new subspecies of H. wallichii from West Kalimantan, Hoya wallichii subsp. tenebrosa. Hoya buntokensis is part of a group of four species that form specialised leaf structures harbouring ants (here defined as megadomatia), and it is most similar to H. undulata. Hoya buntokensis differs from H. undulata in lamina margin (flat vs undulate); shape of corona lobes outer processes (fan shaped vs elliptic), and in the pollinarium morphology (corpusculum larger than pollinia vs corpusculum smaller than pollinia). Both H. wallichii subsp. wallichii and H. wallichii subsp. tenebrosa are slender plants with ovate to oblong, thinly coriaceous glabrous leaves, slender peduncles with 1 or 2 flowers open at a time, and broadly campanulate corollas. Hoya wallichii subsp. tenebrosa differs from H. wallichii subsp. wallichii in corolla colour (dark purple with a paler edge vs white-cream), corona lobe shape and surface (broadly elliptic, spreading and with a minute inner process, almost black with a velvety surface vs kidney-shaped, erect and with a well-developed acuminate inner process, purple with a shiny surface).

A new Hoya subspecies from Borneo and Sumatra, Hoya fauziana ssp. angulata is described and illustrated. Both subspecies of Hoya fauziana have long lanceolate leaves, pubescent corollas and prominent ovoid corona lobes. They can be separated by the orientation of the pedicels (straight in H. fauziana ssp. fauziana and angled in H. fauziana ssp. angulata) and the type and position of pubescence of the corolla (tube and lobes pubescent with evident sericeous hairs in H. fauziana ssp. fauziana vs only tube finely pubescent in H. fauziana ssp. angulata).

Статья содержит сведения о 33 новых и редких видах рода Hoya, полученные в ходе полевых работ, проводившихся на протяжении 2012–2017 гг. в восточном Индокитае, включающем территорию Камбоджи, Лаоса и Вьетнама. Полученные результаты включают иллюстрированные описания 3 видов, новых для науки, а также 24 видов, новых для флор изучаемых стран. С учетом этих данных флора восточного Индокитая насчитывает как минимум 45 видов рода, произрастание восьми из которых задокументировано для Камбоджи, 21 – для Лаоса и 40 – для Вьетнама. Два новых для науки вида описаны из Вьетнама (H. crassipetiolataи H. nutans) и один – из Лаоса (H. uniflora). 18 видов впервые указываются для флоры Вьетнама (H. arnottiana, H. burmanica, H. chinghungensis, H. erythrina, H. erythrostemma, H. fungii, H. griffithii, H. hainanensis, H. lanceolata, H. linearis, H. loyceandrewsiana, H. mengtzeensis, H. nummularioides, H. pachyclada, H. pandurata, H. parviflora, H. revolubilis, H. vaccinioides), 9 – для флоры Лаоса (H. arnottiana, H. carnosa, H. chinghungensis, H. fungii, H. globulosa, H. griffithii, H. linearis, H. pandurata, H. polyneura) и 2 – для флоры Камбоджи (H. lobbii, H. multiflora). Выявлены новые местонахождения ряда редких видов (H. bonii, H. lockii, H. lyi, H. micrantha, H. multiflora, H. oblongacutifolia и H. verticillata), известных ранее в восточном Индокитае по единичным сборам. Для 8 видов (H. arnottiana, Hgriffithii, H. lanceolata, H. lobbii, H. nummularioides, H. oblongacutifolia, H. pachycladaи H. vaccinioides) выбраны лектотипы. Названия 5 таксонов, принимаемых ранее в качестве самостоятельных видов (H. villosa, H. pseudovalifolia, H. graveolens, H. balansae), сведены в синонимы к следующим принятым ныне видам: H. globulosa, H. micrantha, H. oblongacutifolia, H. verticillata, соответственно., This paper provides new data on 33 new or rare species of Hoya obtained in fieldwork mainly during 2012–2017 in eastern Indochina including Cambodia, Laos and Vietnam. These data include illustrated descriptions of three species new for science, as well as illustrated records of 24 species new for the floras of the studied countries. When these new data are included, the flora of eastern Indochina comprises at least 45 species. Among them eight species are recorded and documented for Cambodia, 21 sp. for Laos and 40 sp. for Vietnam; two new species are described in Vietnam (H. crassipetiolata and H. nutans) and one species is described from Laos (H. uniflora). Eighteen species were recorded newly for the flora of Vietnam (H. arnottiana, H. burmanica, H. chinghungensis, H. erythrina, H. erythrostemma, H. fungii, H. griffithii, H. hainanensis, H. lanceolata, H. linearis, H. loyceandrewsiana, H. mengtzeensis, H. nummularioides, H. pachyclada, H. pandurata, H. parviflora, H. revolubilis, H. vaccinioides), nine for Laos (H. arnottiana, H. carnosa, H. chinghungensis, H. fungii, H. globulosa, H. griffithii, H. linearis, H. pandurata, H. polyneura) and two for Cambodia (H. lobbii, H. multiflora). New localities were discovered for H. bonii, H. lockii, H. lyi, H. micrantha, H. multiflora, H. oblongacutifolia, and H. verticillata known earlier in Cambodia, Laos and Vietnam by few collections. Lectotypes are proposed for the following eight species: H. arnottiana, H griffithii, H. lanceolata, H. lobbii, H. nummularioides, H. oblongacutifolia, H. pachyclada, and H. vaccinioides. Names of five taxa earlier known as separate species (H. villosa, H. pseudovalifolia, H. graveolens, H. balansae) are regarded as synonyms of H. globulosa, H. micrantha, H. oblongacutifolia, H. verticillata respectively.

This paper provides new data on 33 new or rare species of Hoya obtained in fieldwork mainly during 2012–2017 in eastern Indochina including Cambodia, Laos and Vietnam. These data include illustrated descriptions of three species new for science, as well as illustrated records of 24 species new for the floras of the studied countries. When these new data are included, the flora of eastern Indochina comprises at least 45 species. Among them eight species are recorded and documented for Cambodia, 21 sp. for Laos and 40 sp. for Vietnam; two new species are described in Vietnam (H. crassipetiolata and H. nutans) and one species is described from Laos (H. uniflora). Eighteen species were recorded newly for the flora of Vietnam (H. arnottiana, H. burmanica, H. chinghungensis, H. erythrina, H. erythrostemma, H. fungii, H. griffithii, H. hainanensis, H. lanceolata, H. linearis, H. loyceandrewsiana, H. mengtzeensis, H. nummularioides, H. pachyclada, H. pandurata, H. parviflora, H. revolubilis, H. vaccinioides), nine for Laos (H. arnottiana, H. carnosa, H. chinghungensis, H. fungii, H. globulosa, H. griffithii, H. linearis, H. pandurata, H. polyneura) and two for Cambodia (H. lobbii, H. multiflora). New localities were discovered for H. bonii, H. lockii, H. lyi, H. micrantha, H. multiflora, H. oblongacutifolia, and H. verticillata known earlier in Cambodia, Laos and Vietnam by few collections. Lectotypes are proposed for the following eight species: H. arnottiana, H griffithii, H. lanceolata, H. lobbii, H. nummularioides, H. oblongacutifolia, H. pachyclada, and H. vaccinioides. Names of five taxa earlier known as separate species (H. villosa, H. pseudovalifolia, H. graveolens, H. balansae) are regarded as synonyms of H. globulosa, H. micrantha, H. oblongacutifolia, H. verticillata respectively., Статья содержит сведения о 33 новых и редких видах рода Hoya, полученные в ходе полевых работ, проводившихся на протяжении 2012–2017 гг. в восточном Индокитае, включающем территорию Камбоджи, Лаоса и Вьетнама. Полученные результаты включают иллюстрированные описания 3 видов, новых для науки, а также 24 видов, новых для флор изучаемых стран. С учетом этих данных флора восточного Индокитая насчитывает как минимум 45 видов рода, произрастание восьми из которых задокументировано для Камбоджи, 21 – для Лаоса и 40 – для Вьетнама. Два новых для науки вида описаны из Вьетнама (H. crassipetiolataи H. nutans) и один – из Лаоса (H. uniflora). 18 видов впервые указываются для флоры Вьетнама (H. arnottiana, H. burmanica, H. chinghungensis, H. erythrina, H. erythrostemma, H. fungii, H. griffithii, H. hainanensis, H. lanceolata, H. linearis, H. loyceandrewsiana, H. mengtzeensis, H. nummularioides, H. pachyclada, H. pandurata, H. parviflora, H. revolubilis, H. vaccinioides), 9 – для флоры Лаоса (H. arnottiana, H. carnosa, H. chinghungensis, H. fungii, H. globulosa, H. griffithii, H. linearis, H. pandurata, H. polyneura) и 2 – для флоры Камбоджи (H. lobbii, H. multiflora). Выявлены новые местонахождения ряда редких видов (H. bonii, H. lockii, H. lyi, H. micrantha, H. multiflora, H. oblongacutifolia и H. verticillata), известных ранее в восточном Индокитае по единичным сборам. Для 8 видов (H. arnottiana, Hgriffithii, H. lanceolata, H. lobbii, H. nummularioides, H. oblongacutifolia, H. pachycladaи H. vaccinioides) выбраны лектотипы. Названия 5 таксонов, принимаемых ранее в качестве самостоятельных видов (H. villosa, H. pseudovalifolia, H. graveolens, H. balansae), сведены в синонимы к следующим принятым ныне видам: H. globulosa, H. micrantha, H. oblongacutifolia, H. verticillata, соответственно.

Anecdotal evidence identified a change in the reaction of the resistant lentil cv Nipper to ascochyta blight in South Australia in 2010 and subsequent seasons, leading to infection. This study investigated field reactions of lentil cultivars against Ascochyta lentis and the pathogenic variability of the A. lentis population in southern Australia on commonly grown cultivars and on parental germplasm used in the Australian lentil breeding program. Disease data recorded in agronomic and plant breeder field trials from 2005 to 2014 in southern Australia confirmed the change in reaction on the foliage of the previously resistant cvs Nipper and Northfield. Cultivar responses to seed staining from A. lentis did not change. The change in foliar response was confirmed in a series of controlled environment experiments using single, conidium-derived, isolates of A. lentis collected over different years and inoculated onto differential host sets. Specific isolate/cultivar interactions produced a significant range of disease reactions from high to low aggressiveness with a greater percentage of isolates more aggressive on cvs Nipper, Northfield and PBA Flash than previously detected. Specific isolates were tested against Australian lentil cultivars and breeding lines in controlled conditions, again verifying the aggressiveness on cv Nipper. A small percentage of isolates collected prior to the commercial release of cv Nipper were also able to infect this cultivar indicating a natural variability of the A. lentis population which subsequently may have been selected in response to high cropping intensity of cv Nipper. Spore release studies from naturally infested lentil stubbles collected from commercial crops also resulted in a high percentage of infection on the previously resistant cvs Nipper and Northfield. Less than 10% of the lesions developed on the resistant differentials ILL7537 and cv Indianhead. Pathogenic variation within the seasonal populations was not affected by th