Amborellaceae

Amborella
	Amborella trichopoda
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
Order:	Amborellales
Family:	Amborellaceae
Genera
	Amborella

Amborellaceae is a family of flowering plants native to New Caledonia. The family contains only one species, Amborella trichopoda. Botanists think it is the most basal plant in the angiosperm clade.

The Amborellaceae are distinctive. They are sprawling evergreen shrubs or small trees. Their tissue is different from any other Angiosperm. The xylem of Amborella contains only tracheids; vessel elements are absent.[1] Xylem of this form has long been regarded as a "primitive" feature of flowering plants.[2]

References

Carlquist S.J. & Schneider E.L. 2001. Vegetative anatomy of the New Caledonian endemic Amborella trichopoda: relationships with the Illiciales and implications for vessel origin. Pacific Science 55 (3): 305–312.
Simpson, M. (2006). Plant systematics. Amsterdam: Elsevier/Academic Press.

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[1] Carlquist S.J. & Schneider E.L. 2001. Vegetative anatomy of the New Caledonian endemic Amborella trichopoda: relationships with the Illiciales and implications for vessel origin. Pacific Science 55 (3): 305–312.

[2] Simpson, M. (2006). Plant systematics. Amsterdam: Elsevier/Academic Press.