diarch xylem

См. также в других словарях:

• diarch — ˈdīˌärk adjective Etymology: di + Greek archē beginning, origin more at archi : having two xylem groups …   Useful english dictionary

• lower vascular plant — ▪ biology Introduction formerly  pteridophyte,  also called  vascular cryptogam,         any of the spore bearing vascular plants, including the ferns, club mosses, spike mosses, quillworts, horsetails, and whisk ferns. Once considered of the… …   Universalium

• Callistophytales — Zeitraum Oberes Karbon (Pennsylvanium) 318 bis 299 Mio. Jahre Fundorte USA, Frankreich Systematik ohne Rang: Charophyta Reich …   Deutsch Wikipedia

• Protopityales — Protopitys Zeitraum Unteres Karbon (Tournaisium) Systematik ohne Rang: Charophyta Reich: Pflanzen (Plantae) Unterreich …   Deutsch Wikipedia

• cycadophyte — ▪ plant Introduction       any member of a diverse collection of mostly extinct primitive gymnospermous plants. They probably had their origins among the progymnosperms of the Devonian Period (416 to 359 million years ago), possibly among a… …   Universalium

• Protopitys — Zeitraum Unteres Karbon (Tournaisium) Systematik ohne Rang: Charophyta Reich: Pflanzen (Plantae) Abteilung …   Deutsch Wikipedia