MAXON — STUDIES OF TROPICA] AMERICAN PERNS. 487 



The following name, given by Professor Underwood and the writer 

 some time ago t<» a Large series of tin* Pteris angustifolia of Swartz, 

 collected in Jamaica, is here proposed: 



Ananthacorus Underw. & Maxon, gen. uov. a 



Rhizome chaffy, creeping; fronds contiguous, exstipitate, Bimple, linear, en- 

 tire, costate, the costa concealed ; veins of unform rank, all joined In hexagonal 

 i less commonly pentagonal) elongate areoles in .*; or I series on each side ot 

 ;iikI parallel to the costa, without free veins; sori slightly impressed, non-indu- 

 siate, in a continuous or subcontinuous I'm*- at the outer edge of the ultimate 

 scries of areoles, distant 1.0 to L.5 mm. from the margin; paraphyses spatulate, 

 flaccid. 



Type, Pteris angu8tifolia Sw. Monotypic. 

 Ananthacorus angustifolius (Sw.) Dnderw. & Maxon. 

 Pteris angustifolia Sw. Prod. L29. L788. 

 Taenitis angustifolia Spreng. Syst. Veg. 4: 12. 1^1*7. 

 Pteropsis angustifolia Desv. Mem. Soc. Linn. Paris 6: 218. 1827. 

 V it t aria angustifolia Baker, in Mart. Pi. Bras. 1 8 :544. 1870. 

 The following specimens are in the P. S. National Herbarium: 



Jamaica: Mansfield and adjoining properties near Bath, altitude 300 to 

 500 meters, on tree trunks of humid forested slopes. Maxon 1794, 1805, 

 2392, 2423, 2431, 2446. Vicinity of Troy, altitude 600 to 660 meters, 

 Maxon 2858. Above Moon 1 Town, altitude 450 meters. Clutt 272. Near 

 Williamsfield, Fredholm ::."»."::. ('una ('una Pass, Fredholm 3216 (as 



I'm nit is hi no (, Ju tn). 



Cuba: Mountains north of San Diego de los Banos, Province of Pinar del 

 Rio, on forest trees, Palmer d Riley 485, 513, 562. Monte Verde, Yateras, 

 Province of Oriente, altitude 575 meters, on trunk of palm in forest, 

 Maxon 4289; in the same vicinity, Wright 978. "Posesion de stark." 

 near Jaguey, Yateras, Province of Oriente, on tree trunks, altitude 150 

 to 525 meters. Maxon 444.". Forested slopes of the Finca Pas Gracias, 

 Yateras, Province of Oriente, on trunk of mamma palm, altitude about 

 500 meters. Maxon 44<>5. Alto Cedro, Underwood it- Earh 1554. 



Santo Domingo: Wright, Parry, & Brummell l'a. 



Grenada: Elliott <;s (as I ittaria remota, det J. <;. Baker). 



Trinidad: /'< ndlt r IP',. 



Mexico: District of Cordoba, state of Vera Cruz, Finek 116. 



Guatemala: Cubilquitz, Alta Verapaz, altitude 350 meters, von Tiirck- 

 heim (•/. Ik 8. 8038). Banks of the Rio Polochic, below Panzos, on trunk 

 of palm, Maxon d Hay 3097. 



I 'a nam a : Hayes 10. 



Colombia: La Esmerelda, near Jamundi, Cauca Valley, altitude 1,100 

 meters. Pittii T 954. 



Fbencb Guiana: Near Cayenne, on tree trunks. Leprieur 106, 



Brazil: Matto Grosso, Lindman A. 3453. 

 The relationship of Ananthacorus is with Yittaria. from which it differs 

 radically in its type of venation which is strictly areolate without lateral 

 veins. The details of venation are shown by Prcsl (Tent. Pterid. pi. I", f. 8.), 

 by John Smith (Hist. Fil. pi. 10. f. C), and by Booker (Gen. Fil. pi. 77. A.). 



I he name is composed of Greek a privative, &vdos, flower, and axopis. in 



modern use the sweet Sag, the fronds resembling the leaves <»t* that plant. 



