144 



[TAB. LXXVL] 



HOLBOELLIA ORNITHOCEPHALA. 



Triandria Monogynia? Nat. Ord. Gramineje. 



Gen. Char. — Holboellia. {Wall. MSS.) — Flores racemosi, 

 monoici v. polygami. Pedicelli basi geniculati. Gluma 

 nulla. Perianthium uniflorum, bivalve. Valves inaequa- 

 les, carinatae, pectinato-ciliatae ; exteriore majore basi su- 

 perne insigniter gibbosa, mteriore sub apiceni unidentata. 

 Semen basi superne gibbosum perianthio cartilagineo 

 tectum. 



Holboellia ornithocephala. (Tab. LXXVI.) 



Gramen perelegans. Radix annua, fibrosa, fibris flexu- 

 osis, pallidis, subsimplicibus, non raro tomentosis. Culmi 

 subcsespitosi, spithamaei ad pedalem, plerumque ad basin 

 subdecumbentes, dein erecti, foliosi, vaginati. Folia 

 lineari-lanceolata, bi-triuncialia, rigidiuscula, flexuosa, 

 undulata, acuminata, glabra, pulcherrime striata, mar- 

 ginibus cartilagineo -albis, antrorsum scabris, inferne 

 caulem longe vaginantia: supremo ad basin racemi. 

 Racemus terminalis, simplex, digitem longus, lineari-cylin- 

 draceus, erectus, multiflorus. Rachis stricta, striata, sca- 

 briuscula. Pedicelli sesquilineam longi, scabriusculi, sur- 

 sum incrassati, utrinque ciliati, inferne ad rachin articu- 

 lati atque geniculati. Flos singularis atque capiti avis 

 fere exacte emulans. Gluma nulla. Perianthium bivalve, 

 simplex; valvis lateraliter compressis, minute elevato- 

 punctatis, acute carinatis, tricristatis, crista e mem- 

 brana cartilaginea diaphana, pulcherrime pectinato- 

 ciliata: valva exteriore bicristata, ciliis apice uncinatis, 

 basi insigniter gibbosa, galeaeformi: inferiore multo 

 minore, sub apicem dente unico, valido instructa, subtus 

 unicristata, ciliis apice vix uncinatis. Pistillum stylis 

 plumosis. Semen perianthio indurato nigrescente tectum, 

 oblongum, subacuminatum, basi superne gibbosum, in- 

 ferne depressum. 



