6a. 
Ta. 
Column with an exauriculate clinandrium; lateral sepals free from one 
PRGRROE cna es aes eevee cee cera iro paeete Sect. Stachydelyna 
Base of lip subglobose, didymous-saccate; calli inserted basally or 
COMEFAIV 18 CAVITY: fae es dino cytes wees Sect. Chloidelyna 
Base of lip conical, subcalcarate-saccate, not didymous; calli inserted 
ON SIGS OF CAVITY 56. ieee baciee see teed rede es Sect. Elleanthus 
Elleanthus Sect. Cephalelyna (Rchb.f.) Rchb.f. in Walp. Ann. 
6: 
474, 1862. 
Basionym: Evelyna Sect. Cephalelyna Rchb.f. in Bot. Zeit. 
10: 709, 1852. 
Lectotype: Evelyna casapensis Rchb.f. in hoc loco. 
Inflorescence terminal, capitate; rachis shortened into a 
tightly packed, subglobose head; column with a prominent, 
infrastigmatic mentum. 
This section is the most difficult as well as the most misun- 
derstood in the genus due to the superficial resemblance of its 
members to one another. Since I did not find a correct treat- 
ment in any of the floristic works pertaining to this group of 
plants, a short synopsis with key to all species is provided here: 
- 
a 
Y 
an 
wn 
fet) 
6a. 
oa eee 
KEY TO SPECIES 
Lip ovate; petals linear-filiform, |-nerved; infrastigmatic protuberance 
of column with a median, recurved digit ............... E. Killipii 
Lip cuneate-flabellate to more or less orbicular; petals wider, several- 
nerved; infrastigmatic protuberance of column without a median, re- 
UNE OS SEI: ccd ds cso cng see eee eae ees tds we ae reeks 2 
Lip from a concave or saccate base cuneate-flabellate ........... 3 
Lip from a concave or saccate base orbicular to suborbicular .... 7 
Infrastigmatic protuberance papillose-hirsute ................0.. 4 
Infrastigmatic protuberance glabrous .......... 0000 c eee ee eee 6 
Lateral sepals oblong-ligulate, acute; petals entire ..............5 
Lateral sepals obliquely ovate-lanceolate, acuminate, petals erose- 
ri oad [oa | (|| a a a ee a ee E. Glomera 
Stem slender; bracts ovate; lip from a saccate base transversely 
elliptic-flabellate with erose-dentate margin, retuse in front ....... 
OL OR cde Oh EER Ke EHR Loe NESE Re eee Chee MRE eRe e E. capitatus 
Stem stout; bracts elliptic; lip from a concave base obovate-flabellate 
with entire margin, bilobed in front. .................-. E. Sodiroi 
Sepals more or less connate at base; lip deeply excised in middle .. 
Ce eee eee Tee TTT ee or reese ee ee eee ee E. Hookeranus 
Sepals free to base; lip slightly retuse in front .. E. sphaerocephalus 
7 
