Triadenum

Abstract: Part 9 concludes this monographic series of papers on the genus Hypericum . The first chapter contains: (i) extended additions to, revisions of, and comments on the systematic parts (Parts 3–8), including a detailed revision of the larger part of Sect. 3. Ascyreia with a revised key; (ii) shorter additions and corrections to all parts; (iii) a detailed enumeration of the sections of the genus with their perceived interrelationships, and (iv) a revised key to these sections. In the second chapter, some of the characters treated in Part 2 are reconsidered, but not chemotaxonomy, which is discussed in an appendix contributed by Sara Crockett. The relationships within and between sections of each of the three groups of the genus are then considered, followed by an interpretation of them in terms of distribution, leading to a description of the disjunctions in distribution thereby revealed. This is followed by a discussion.of the various means of dispersal that may have brought about these distribution patterns. In the final section on the evolution of the genus, Santomasia is re-incorporated in Hypericum , but Lianthus and Triadenum continue to be excluded. A consideration of the relationships of the Hypericaceae to the rest of the Clusioid clade leads to a description of the probable characters of the primitive Hypericum . New taxa and names appearing in this Part are: Sect. 1a: Hypericum sect. Santomasia . Sect. 1: H. smithii. Sect. 3: H. reptans subsp. ogisui ; H . rotundifolium ; H. oxyphyllum ; H. calycinum forma luteum ; H. fanjingense ; H. hookerianum ‘Rodgersii’; H. lagarocaule. Sect. 5: H. × inodorum ‘Limpsfield’. Sect. 14: H. × caesariense. Sect. 18: H. linarioides Bosse subsp. alpestre . Sect. 28: Hypericum sect. Tripentas . Sect. 29: H. monroi ; H. graciliforme ; H. marahuacanum subsp. compactum.

Abstract: Based on field investigation of and literature study on family Clusiaceae (Guttiferae) in China, this paper deals with the morphological characteristics in terms of aesthetic purposes, natural distribution, status of resources, and ethnobotany of species with potential ornamental values. There are 8 genera and 95 species in Clusiaceae occurring in China. They grow mainly in tropical regions, except for Hypericum and Triadenum, which are commonly found in the temperate zone. Some Clusiaceae species are cultivated along streets, in parking lots, or in gardens, for their graceful shape, evergreen foliage, and large fragrant polyandrous flowers. In addition to aesthetic values, the plants of Clusiaceae can provide edible fruits, drinks, herbal medicines, dyes, oil-bearing seeds, valuable commercial resin or gum, and hard wood. With multiple uses, this family is considered as a very important group by the indigenous people in China for its economic purposes. Garcinia subelliptica is characteristically a coastal tree, which is often used as windbreaks, aesthetic trees and fences. In some ethnic minority areas, a few species even have special cultural and religious significance such as Mesua ferrea. The plants we recommend here as potential ornamentals comprise 34 species of trees, shrubs or herbs. Their horticultural characters and development strategy are presented and analyzed. A proposal for their effective conservation is also suggested.