Difference between revisions of "Cyperus subg. Pycreus"

Revision as of 21:06, 16 December 2019

Culms and leaves with Kranz (chlorocyperoid) anatomy. Inflorescences: spikes; rachilla persistent, wingless or nearly so. Spikelets borne in loosely spicate to ± digitate clusters; floral scales deciduous, 2-keeled or folded. Flowers: stamens (1–)2–3; pistils 2; stigmas 2. Achenes biconvex or ± cylindric, laterally compressed, edge borne toward rachilla.

Distribution

Worldwide.

Discussion

Species ca. 100 (11 in the flora).

Laterally compressed, biconvex achenes, a feature not occurring elsewhere in the family, distinguish Cyperus subg. Pycreus. The taxon has been treated as a genus in Flora Mesoamericana (C. D. Adams 1994), an idea that may have merit.

Selected References

None.

Lower Taxa

Cyperus bipartitus, Cyperus diandrus, Cyperus filicinus, Cyperus flavescens, Cyperus flavicomus, Cyperus fugax, Cyperus lanceolatus, Cyperus melanostachyus, Cyperus polystachyos, Cyperus pumilus, Cyperus sanguinolentus

@@ Line 10: / Line 10: @@
 |name=Undefined subg. Pycreus
 |authority=Palisot de Beauvois
+|rank=subgenus
 |publication_title=Fl. Oware
 |publication_place=2: 48. 1816
@@ Line 16: / Line 17: @@
 |name=Cyperus sect. Pycreus
 |authority=(Palisot de Beauvois) Grisebach
+|rank=section
 }}
 |hierarchy=Cyperaceae;Cyperus;Cyperus subg. Pycreus
@@ Line 38: / Line 40: @@
 -->{{#Taxon:
 name=Cyperus subg. Pycreus
-|author=
 |authority=(Palisot de Beauvois) J. Carey
 |rank=subgenus
@@ Line 50: / Line 51: @@
 |publication year=1847
 |special status=
-|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V23/V23_249.xml
+|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V23/V23_249.xml
 |genus=Cyperus
 |subgenus=Cyperus subg. Pycreus