This work extends knowledge about the distribution of secretory structures (black nodules, translucent glands, and type Aand B secretory canals) to other species of the genus Hypericum L., as only H. perforatum L. appears to have been widely investigated.Moreover, the current study was extended to include leaf vascular patterns. In the species studied, a possible correlation between thepresence of black nodules and a particular biological form, that of hemicryptophytes scapose perennials such as H. perfoliatum L., H.perforatum L., H. pubescens Boiss., H. tetrapterum Fr., and H. triquetrifolium Turra, was noted. These black nodules are not present in H.androsaemum L. and H. hircinum L., which are bushy nanophanerophytes, or in H. aegypticum L., a xero-halophyte. The xylem patternresults are camptodromous brochidodromous in H. androsaemum, H. hircinum, H. perforatum, and H. pubescens; basal acrodromous inH. perfoliatum, H. tetrapterum, and H. triquetrifolium; and camptodromous cladodromous in H. aegypticum.
|Numero di pagine||12|
|Rivista||TURKISH JOURNAL OF BOTANY|
|Stato di pubblicazione||Published - 2013|
All Science Journal Classification (ASJC) codes
- Plant Science