Survey of the vascular plants of Sierra Chica, the untouched area of the Paititi Natural Reserve (southeastern Tandilia mountain range, Buenos Aires province, Argentina) Author Echeverría, María L. Author Alonso, Sara I. Author Comparatore, Viviana M. text Check List 2017 2017-12-15 13 6 1003 1036 http://dx.doi.org/10.15560/13.6.1003 journal article 10.15560/13.6.1003 1809-127X Cypella herbertii Hooker subsp. wolffhuegeli (Hauman) Ravenna Figure 8 Cypella herbertii Hooker subsp. wolffhuegeli (Hauman) Ravenna (1965) : 312 — Cabrera (1968) : 548 ; Hurrell (2009a) : 270 ; Flora Argentina (2017) ; Tropicos (2017) . Cypella wolffhuegeli Hauman (1909) : 84 . Cypella herbertii Hooker (1826) : 2637 . Cryptophyte, endemic to mountain ranges of Buenos Aires province . Vulnerable due to restricted habitat ( Delucchi 2006 ). Characteristics. Perennial herb. Bulbs subglobose. Peduncles erect, branched, to 1 m tall. Basal leaves scarce, linear in shape, parallel-veined, folded, to 35 cm long, 2.5 cm wide. Inflorescence: a cyme (rhipidium); bracts unequal, with 1–2 flowers; tepals orange-brown, filaments free, styles entire. Fruit: a capsule. Comments. This is a rare species in the study area. It grows in full sunlight conditions in rock cracks on slopes. It is very similar to C. herbertii ssp. herbertii , but this last species presents vivid orange tepals and united filaments.