Zeravschania Korovin 1948
Creators: name: Pimenov, Michael G.
name: Kljuykov, Eugene V.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Apiales
Apiaceae
Zeravschania

description: Key to the species of Zeravschania:   
1. Stem covered with short hairs in lower part................................................................................................................ 2  
- Stems completely glabrous in lower part..................................................................................................................... 3  
 2. Plants polycarpic with branched rootstocks; leaves subbipinnate, petiolate; leaf segments with petiolules; umbel rays 1–1.5 cm long .................................................................................................................................... Z. kopetdaghensis   
 - Plants monocarpic with tap-roots; leaves pinnate, with very short petioles; leaf segments sessile; umbel rays 2.5–3.5 cm long .................................................................................................................................................... Z. stricticaulis   
3. Petals white.................................................................................................................................................................. 4  
- Petals yellow or greenish-yellow.................................................................................................................................. 9  
4. Terminal leaf segments small, 3–4 mm long............................................................................................................... 5  
- Terminal leaf segments relatively large, 5–50 mm long............................................................................................... 6  
 5. Stems hollow; leaves long-persistent, glabrous; mericarp ribs with secretory ducts..................................................... ..................................................................................................................................... Z. regeliana Korovin (1948: 28)   
 - Stems solid; leaves soon withering, covered with short rigid hairs; mericarp ribs without secretory ducts................. ............................................................................................................................... Z. scabrifolia Pimenov (1983: 375)   
 6. Stems solid, terminal leaf segments 30–50 mm long, 18–25 mm wide, shallowly lobed, coriaceous; umbels with 3–5 rays ................................................................................................................................................................ Z. latifolia   
- Stems fistulose, terminal leaf segments 5–10 mm long, 4–8 mm wide, deeply dissected, soft; umbels with (5–)6–12 rays............................................................................................................................................................................... 7  
 7. Calyx teeth broadly triangular, obtuse; stylopods conical ........... Z. ferulifolia (Gilli 1959: 204) Pimenov (1987: 460)   
- Calyx teeth inconspicuous; stylopods short-conical or dish-shaped........................................................................... 8  
 8. Plants of high altitudes with thick, branched rootstock; stylopods dish-shaped............................................................ ........................................................................................ Z. minjanensis (Rechinger 1963: 88) Rechinger (1987: 461)   
 - Plants of low altitudes with taproots; stylopods short-conical....................................................................................... ................................................................................................... Z. aucheri (Boissier 1844: 315) Pimenov (1987: 459)   
 9. Terminal leaf segments lanceolate, short ................ Z. pauciradiata (Tamamschjan 1936: 225) Pimenov (1987: 459)   
- Terminal leaf segments long, narrowly linear to filiform........................................................................................... 10  
 10. Leaves rigid; bracteoles white-membranous at the margin, lanceolate to ovate.................................................................................................................................................... Z. membranacea (Boissier 1844: 315) Pimenov (1987: 458)   
 - Leaves soft; bracteoles herbaceous, linear...................................................................................................................... ........................................... Z. knappii (Bornmueller 1910: 121) Pimenov & Kljuykov (in Pimenov et al. 2007: 497)
description: Published as part of Pimenov, Michael G. & Kljuykov, Eugene V., 2013, Two new species of Zeravschania (Umbelliferae) and some additional notes on the genus, pp. 25-33 in Phytotaxa 130 (1) on page 32, DOI: 10.11646/phytotaxa.130.1.3, http://zenodo.org/record/5085761