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FNA | Family List | FNA Vol. 9 | Amaryllidaceae | Rosaceae subfam. Amygdaloideae

4c4. Rosaceae Jussieu (subfam. Amygdaloideae) tribe Exochordeae Schulze-Menz ex Reveal, J. Bot. Res. Inst. Texas. 4: 215. 2010.

Luc Brouillet

Shrubs or trees; unarmed. Leaves alternate, simple; stipules absent or caducous (Oemleria), (rudimentary) free; venation pinnate. Flowers: perianth and androecium perigynous; epicalyx bractlets absent; hypanthium campanulate to turbinate or obturbinate; torus absent or minute; carpels [1–]5, distinct or connate, free, styles terminal, distinct; ovules 1 or 2, apical, collateral. Fruits capsules or aggregated drupes; styles not persistent, not elongate.

Genera 3, species 8 or 9 (2 genera, 2 species in the flora): North America, Asia.

The base chromosome number for Exochordeae is x = 8. Prinsepia Royle is Asian and is not present in North America. The tribal name Osmaronieae Rydberg, which pertains here, is illegitimate.


1 Plants synoecious; stipules usually absent; leaf blades membranous, margins entire or serrate in distal 1/2; carpels connate; fruits capsules.   35 Exochorda, p. xxx
+ Plants usually dioecious, rarely monoecious; stipules caducous; leaf blades coriaceous, margins entire; carpels distinct; fruits drupes.   36 Oemleria, p. xxx

Lower Taxa


 

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