title: Getting Back to the Sources: New Insights on the Phylogenetic Placement and Circumscription of &lt;em&gt;Sclerosiphon &lt;/em&gt;(&lt;em&gt;Iridaceae&lt;/em&gt;) and Its Relationships to the Re-Circumscribed &lt;em&gt;Cryptobasis&lt;/em&gt;
abstract: The ‘Tenuifoliae irises’ are a distinctive group of beardless, rhizomatous perennial irises, which are characterised by their somewhat vertical rhizomes, typically clothed at the apex with long maroon-brown, sharp fibrous remains of leaf sheaths; perianth tube long, filiform to scapiform; stigma bilobed; capsules often trigonous to six-ribbed, apically beaked; and seeds angulose to subcubic or pyriform, lacking fleshy appendages, and with testa hard, irregularly wrinkled. The representatives of 
journal: Preprints.org