350 



be removed from tlie Thlaspidem to tlie LepidinecB, and it 

 will come very near Hexaptera^ differing in the absence of 

 dorsal wings to the valves of the capsule, and in its linear 

 petals. 



HEXAPTERA. Nov. Gen. 



foliola 



Petala obovata, un- 



gLiiculataj integra. Stam. 6, omnia liberaj vel 4 longiora 

 per paria ultra medium unita. Silicula breviter stipitata, 

 stylo stigmateque incrassato lasviter sulcato terminata, bi- 

 locularisj bivalvis^ valvis ad suturas insigniter contractis, 

 scutatis, e stylo demum pendulis, dorso lateribusque late 

 alatis, monospermis. Septum angustissimum, seu obso- 

 letum. Semeri obovatum, immarginatum. Cotykdones 

 incumbentes, — Flores albL 



* Stamina majora per paria ultra medium connexa. 



1. Hexaptera pinnaii/ida, {GilL et Hook.) ; foliis pinnatifidis, 

 caulinis paucis. (Tab. LXXII.) 



■ 



L 



Hab. Apud " Quebrada de Rios" in Andibiis Chilensibus: 

 prope « Ladera de las Vacas," in valle " Herraosa," et 

 prope ripas fluminis « Tonyan," in vallc Tennyanensi 

 Andium versus Mendozam, alt. 10,000 ped. Gillies. 



Hadix descendens, subfusiformis, ut videtur, annua. Cauhs 

 solitarius, erectus, superne ramosus, teres, pubescenti-pi- 

 losus, parce foliosus. Folia praecipae radicalia, oblonga 

 vel ovalia, profunda pinnatifida, subglabra vel pilosa, 

 nunc etiam hispida, laciniis ovatis lanceolatisve, acutis vel 

 obtusis, integris vel sinuatis, non raro pinnatifido-lobatis, 

 inferne in petiolum longum attenuata: caulina sensinJ 

 minora. Flores corymbosi, demum racemosi, pai"v>- 

 Ca/^a; tetraphyllus, foliolis ovatis, concavis, dorso (pe^^i- 

 cellisque) Lispidls, erectis, basi fcqualibus. Petala calyce 

 duple' longiora, obovata, subunguiculata. Stamina 6, * 

 longiora filanientis per paria ultra medium connexis: 

 AntherfB oblongae. Pistillum : Germen breviter stipitatum, 

 hexapterum: Stylus germinis longltudine: Stigma eras- 

 sum, Venice sulcatum. Fructus : Silicula, circumscnp- 



