106 BULLETIN DE L’HERBIER BOISSIER (2me sÉR.). 1908 (9) 
Styli rosirum inferne albo-viridulum, superne plus minusve vinoso- 
violascens, subeylindricum v. superne leviter incrassatum, 0,6-0.75 mm. 
crassum, eirciter 2 mm. longum, apice rotundato-truncalum. 
Puraguay : in regione fluminis Yhü pr. Caaguazü, in campo (Oct. 1905. 
Hassler, Pl. parag. No 95225). 
O. ophiuroideo Malme [Asclep. parag. (1904), p. 2%) affine, etsi haud arctius; 
foliis angustioribus, petalis duplo brevioribus, retinaculo breviore, polliniis lon- 
gioribus, rostro stylari brevi, haud bifido perbene distinctum. 
Ab O. aceroso Malme jam squamis coronæ multo brevioribus, rostro stylari 
brevi, retinaculi polliniorumque indole recedit. 
O. acerosum Malme sp. n. — Typus in herb. Hassler. 
Herba perennis 50-75 cm. (rarius usque 1 m.) alla; caulis erectus, 
simplex, salis gracilis, circiter 1.5 mm. crassus, glaber v. superne pilis 
brevibus, raris ornatus, internodiis vulgo 5-8 cm. longis. Folia erecta v. 
patula, brevipetiolata, petiolo 2-3 mm. longo, linearia, vulgo 6-9 cm. 
longa, 1,5-2 mm. lala (infima sæpe 2-3 mm. lata, tantum 3-6 cm. longa), 
utroque apice acuta, et supra et subtus viridia, glaberrima v. pilis rarissi- 
mis brevibus ornata, marginibus neque carlilagineis neque revolulis. 
Inflorescentiæ extraaxillares,oppositæ (rarius alternæ), multifloræ, umbel- 
liformes, pedunculus elongatus, 5-10 cm. longus, præcipue superne pube- 
rulus; pedicelli gracillimi, 5-10 mm., rarius usque 15 mm. longi, pube- 
ruli. Calycis laciniæ e basi vix 1 mm. Jata sensim angustatæ, superne 
subulatæ, 3-3,5 mm. longæ, subtus (dorso) pilis brevibus, plus minusve 
appressis puberulæ, apice subnudæ, supra glabr&; glandulæ calycinæ parvæ, 
singulæ v. rarius binæ. Corollæ tubus brevissimus, 1,5-2 mm. longus, late 
campanulalus, extus puberulus, intus fauce brevibarbatus ; limbi lobi paten- 
tissimi v. plus minusve reflexi, spiraliter tortuli, e basi circiter 2 mm. lata 
primum angustali, dein sublineares, 5-6 mm. longi, apice obtusiuseuli, 
subtus puberuli, supra glabri, ochroleuci v. flavo-virentes. Coronæ squa- 
mæ imo tubo corollæ et tubo stamineo insertæ, erectæ, glabræ, albæ, 
submembranaceæ, lanceolato-oblongæ, circiter 1,2 mm. lat, 3-3,5 mm. lon- 
ge, usque ad medium bifidæ, sinu angustissimo, lobis e basi sensim paul- 
lulum attenuatis v. sublinearibus, apice oblusis et recurvatis. Gynoste- 
gium subsessile, vix 2 mm. allum; antheræ manifeste carlilagineo-margi- 
naiæ, appendicibus apicalibus ovatis, circiter 0,9 mm. longis, 0,7 mm. 
latis, apice rotundalis. Retinaculum crassum, ab externa parle visum 
lineari-lanceolatum, 0.6-0.65 mm. longum, 0,09-0,11 mm. latum, apice 
obtusissimum v. rotundatum. Caudiculæ paullulum descendentes, eirciter 
0,25 mm. longæ, dente munitæ 0,25-0,28 mm. longo, apice obtuso 
recurvalo, libero, ceterum ope membranæ subhyalinæ cum parte infima 
relinaculi conjuncto. Pollinia oblonga, subrecta, 0,35-0,4 mm. longa, 
circiter 0,14 mm. crassa, basi rotundata, apice obtusissima. Styli rostrum 
album, subeylindricum v. fere filiforme (0,5-0.66 mm. crassum), 4-5 mm. 
longum, in parte quinta v. quarla summa bifidum, lobis erectis, semi- 
conicis, aculis. 
Paraguay : in regione fluminis Yhü pr. Caaguazü, in campis (Oct. 1905. 
Hassler, PI. parag. N° 9594 et 959% a). 
Ab O. ophiuroideo Malme ne: parag. (1901), p. 2%], eui affine est, foliis 
angustioribus, basi acutis, pedunculis multo longioribus, petalis duplo breviori- 
bus, corona longius exserta etc. manifeste recedit. 
m ——— 
