Aza‐Polycyclic Aromatic Hydrocarbons from Saruma henryi

A new azafluoranthene alkaloid, named sarumine ( 1 ), along with six known N‐containing derivatives of phenanthrenes, 2 – 7 , were isolated from the whole herb of Saruma henryi. Their structures were elucidated on the basis of extensive spectroscopic analysis. Moreover, antimicrobial activities of all compounds were evaluated.     

珍珠莲传粉系统的研究

珍珠莲为榕属攀援灌木,雌雄异株。雌花序中着生雌花,每个花序中平均有雌花310.4朵;雄花序中着生瘿花、雄花和两性花,每个花序平均有瘿花391.0朵、雄花104.8朵、两性花2.0朵。自然状态下雌、瘿花的结实率和成虫瘿率分别为95.88％、29.51％。雌、瘿花在生理上已完全分离。匍茎榕小蜂是唯一能进入花产卵或传粉的共生昆虫,二者构成的传粉系统依靠形态结构的高度互适,物候生活史的相互吻合,以及特化的生物学行为维系其专一性和稳固性。     

543. Quercus × Warburgii

Summary.  Quercus × warburgii A. Camus, the Cambridge Oak, is a semi‐evergreen tree of hybrid origin, possibly between Q. rugosa Née and Q. robur L., and is only known in cultivation. Mature trees in gardens are extremely rare. Its history and cultivation are discussed.     

541. Corylus × Vilmorinii

Summary.  The hybrid hazel, Corylus  ×  vilmorinii Rehder is described and illustrated. Its robust habit and showy catkins make it an interesting and worthwhile tree to cultivate.     

545. Rosa × Pteragonis 'Cantabrigiensis'

Summary.  Rosa 'Cantabrigiensis' is a hybrid whose history is connected with Cambridge University Botanic Garden where it was raised and first recognised in 1922. Its origin in the experimental work on Rosa by Charles Hurst is discussed, and its likely parentage is given.     

Zur Kenntnis desSaruma Henryi Oliv

Ohne Zusammenfassung     

535. Fritillaria Koidzumiana

Summary.  Fritillaria koidzumiana Ohwi is illustrated and described, and instructions for its cultivation are given.     

547. Geranium Christensenianum

Summary.  The discovery, taxonomic history and affinities of Geranium christensenianum Handel‐Mazzetti are described. Its recent introduction and cultivation requirements are discussed.     

548. Fritillaria Poluninii

Summary.  The diminutive Fritillaria poluninii (Rix) Bakhshi Khaniki & K. Persoon from northern Iran is illustrated and described, and its relationship with the F. crassifolia group is discussed.     

530. Impatiens Morsei

Summary.  Impatiens morsei Hook. f. ( Balsaminaceae ) appeared unnamed in cultivation in Holland some twenty years ago from an unrecorded source. The exact identity of the plant remained unclear for some time but its true identity can now be revealed.     

537. Impatiens Namchabarwensis

Summary.  Impatiens namchabarwensis , a new species of Impatiens found in Tibet, is described together with its taxonomy, distribution, ecology and notes on cultivation.     

505. Aloe Parvula

Summary.  Aloe parvula A. Berger, a miniature aloe endemic to Madagascar, is described and illustrated. Its ecology and conservation status are discussed. A typical habitat in the Itremo Massif is shown.     

521. Trichocentrum Dianthum

Summary.  Trichocentrum dianthum Pupulin & Mora‐Retana ( Orchidaceae ), a small epiphyte endemic to southern Costa Rica, is described and illustrated. Notes on its ecology, pollination, and cultural requirements are provided.     

512. Paphiopedilum Vietnamense

Summary.  The history, taxonomy, distribution and cultivation of Paphiopedilum vietnamense Gruss & Perner are given, and the species is illustrated. The almost total predation of the plant in its natural habitat by collectors since it was discovered in 1997, is discussed, and it is now assessed as CR, critically endangered, in the wild.     

514. Masdevallia Niesseniae

Summary.  The golden‐flowered Masdevallia niesseniae Luer from Colombia is described and illustrated from the type collection.     

502. Sinningia Pusilla

Summary. A miniature gesneriad, Sinningia pusilla(C. Mart.) Baill. from Brazil is described and illustrated, and notes are given on the horticultural history of the genus Sinningia     

553. Platycarya Strobilacea

Summary.  Platycarya strobilacea Siebold & Zucc. is a monotypic genus and an unusual and rare tree in cultivation. Its discovery and introduction into cultivation are described.