Spiranthes magnicamporum Sheviah spec. nov. 
Herba erecta, infra glabra, supra pubescens, copiosa 
cum trichomis capitatis, 15-57 cm.alta. Radices tuberoso- 
crassae, usque ad 8 mm. in diametro. Folia omnia radi- 
‘alia, fugacia, lineari-lanceolata, basi cuneata, acuta, 
usque ad 12 mm. lata, 14 cm. longa. Caulis gracilis ad 
lacuno-crassa, 1.5-7 mm. in diametro, aliquot bracteis 
vaginantibus instructa. Spica densa, 15-28 mm. in dia- 
metro, 4-18 cm. longa. Phyllotaxis 4} vel rariter | ; ortho- 
stichies saepe in forma spirale. Bracteae floriferes ovatae, 
attenuatae vel saepe acuminatae, 10-830 mm. longae. 
Flores albi ad eborei, labelli pars centralis saepe flava, 
valde cumarino-aromatici: segmentis perianthil extus 
pubescentibus. Sepalum dorsale lanceolatum, acutum, 
7-11 mm. longum, 1.5-8 mm. latum: sepala lateralia 
libera, late patentia ad rariter laxe incurvata, lineari- 
lanceolata ad lineari-oblonga, acuminata ad obtusa, 7-11 
mm. longa, 1-2 mm. lata. Petala sepalo dorsale adhaer- 
entia, linearia, acuminata, 7-10 mm. longa, fere 1 mm. 
lata. Labellum oblongo-ovatum ad rhombico-ovatum 
vel rariter fere triangulare, potius aequaliter arcuatum 
sed apice saepe abrupte reflexum; sine dilatatione basale 
vel constrictione mediane; margine integro vel parte 
quarta apicole dentato, vix crispo; 7-11 mm. longum, 
3.5-6 mm. latum; calli basales prominentes, pubescentes. 
Typus: R.A. Mvers 98158. ‘‘Hill prairie, 3.5 mi., S., 
of Eldred, Greene Co., Llinois, Oct. 10, 1968.°" (speci- 
men ‘‘a’’). Typus in LLLS. 
Other characteristic, noteworthy collections include: 
R. 7. Rexroat 4411. ‘‘Oct. 2,1957. Scott Co., Ilinois. 
High loess hillside. Fls. very fragrant.”*” (ISM). 
C.J. Sheviah 352. **Orchidaceae of Illinois: 69-11-07- 
04: very abundant in grazed hill prairie. with -f7- 
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