90 Beiblatt zu den Botanischen Jahrbiichern. Nr. US 



H 



P 



_ w 



B. Pitygentias, eine neue Oattung der Gentianaceen aus Peru. 



Pitygentias Giig nov. gen. 



• Flores hermaphroditi in axillis foliorum dense verticillatorura solitarii 

 vel rarius in cymas brevipedunculatas 3 — 2-lloras dispositi, foliis sive 

 bracteis euphylloideis, sed ad basin semper manifeste saccato-incrassatis 

 et in axillis pila glanduligera nigrescentia secernentia numerosa praeben- 

 tibus. Calycis tubus cylindraceus elongatus, manifeste 10- vel ranus 

 <2-striatus, intus ad basin pila nectarifera nigrescentia numerosa praebens, 

 lobis 5 vel saepius 6 tubum longit. non vel vix adaequantibus, sub anthesi 

 erectis. CoroUae calycem non vel vix superantis »viridis« tubus cylindra- 

 ceus elongatus, lobis 5 sub anthesi erectis tubo multo brevioribus, contortis, 

 lobo sinistro semper dextrum tegente, fauce nee plicis nee pilis instructus, 

 intus paullo supra basin inter stamina callis 5 nectariferis annulum undu- 

 latum formantibus ornatus, praeterea intus ad basin ipsam circa ovarii 

 basin annulum nectariferum praebens. Stamina 5, filamenlis taeniafis, 

 ultra medium tubo adnatis, superne liberis, antheris tubum baud exce* en- 

 tibus oblongis basifixis, erectis, thecis introrsum dehiscentibus. Ovarium 

 jam sub anthesi magnum vel maximum brevissime stipitatum oblonguii 

 superne sensim attenuatum, uniloculare, placentis parietalibus vix pro 

 nentibus, stylo nullo, stigmate late bilobo. Semina cr. 20 globosa, ^"^""^^ 

 nigrescentia, testa laevi, nitida. — Herbae perennantes radice ^'°"°^..^ 

 crassa fusiformi fibrosa, caudice crassissimo brevi erecto foliis vel '^^'^.^^ 

 foliorum emarcidorum densissirae obtecto, caule florigero semper ^^^ 

 erecto simplici valido foliis angustis linearibus vel lineari-lanceolalis ^^_^^ 

 vel densissime verticillatis plerumque abscondito, internodiis brevis 

 rarius usque ad 1 — -1,5 cm elongatis. 



Species 2 adhuc notae: 



Pitygentias pinifolia (R. et Pav.) Gilg. , ,,§38) 



Gentiana pinifolia R. et Pav. ex Don Gep. Syst. Gard. ■ I ^., 

 p. 182; Fielding, Sert. Plant. (1844) t. 58; Griseb. in DC. ^^^^^'^ \^^^. 

 p. 93; Weddell, Ghlor. And. 11. (1So9) p. 71; Gilg in Englers Botan. < 

 XXII. (1896) p. 33, in Fedde, Repert. II. (1906) p. 50. ^^^ ^^^^ 



Peru: Auf den Anden (Ruiz u. Pavon), auf ^^^^ . ^^^^1° ggBHAirt 

 Lima, auf erdig-steinigem Boden am Gletscher Yanasinga y'^l^^^, ^ 

 n. 5191. — Bliihend im August), Depart. Ancachs, Prov. Cajata 



