and not found in A. orizabensis. For these reasons 1 have taken up

Mededeelingen 'sRfjks Herbarium Leiden:
474
and not found in A. orizabensis. For these reasons 1 have taken up
H U B B A R D ' S plant as a variety of A. orizabensis.
Aristida puntila Deeaisne.
JOSEPH
Observations sur quelques nouveaux genres et
plantes de l'Arabie-Heureuse, Annates des Sciences
naturelles; Seconde Sèrie, Tome I V .
Botanique, Paris, [1835] p. 85!
DECAISNE;
espèces de
A. annua; culmis gracilibus basi subgeniculatis glabriusculis; foliis setaceis
involutis suprà scabris; vagina ciliatà ;
florum pedicellis pilosis; glumis inaequalibus, inferiori acuminata, superiori
lineari duplo longiori ; paleà infer.
3-aristatà, aristis
denticulato-scabris.
Hab. l'Hedjas.
G B A M E N annuum, V/ —i poll. R A D I C E L L A E
fibrosae, pilosae. C U L M I pluies,
filiformes,striati,
deflexi, glaberrimi, nodosi nodis fuscis. F O L I A
setacea involuta, acuta, suprà praesertim denticulato-aspera, pallide viridin, glaucescentia, subarcuata: V A G I N A fissa, striata, scabriuscnla,
margine membranacea, ore ciliata. P A N I C U L A
subcontracta, culmo longitudine subaequalis.
S P I C U L A E uniflorae, pedunculatae, scabrae. G L U M A
bivalvis inaequalis, linearis: inferior mucronatoaristata; superior duplo longior, acuta, glabra.
F L O S breviter pedicellatus, pedicello piloso. P A L E A
inferior linearis, elongata, involuta, subcarinata,
carina asperà trinervià, nervis apice in tres
aristas filiformes denticulato-scabras inaequales
(lateral, breviores) desinentibus. P A L E A inferior *)
brevissima, inferiori multoties brevior, inclusa,
ovata, obtusa, membranacea. S Q U A M U L A E hypogynae binae, lanceolato-ovatae, longitudinaliter
venosae, paleae superiori subaequales. S T A M I N A
terna, paleam superiorem aequantia, erecta.
2
X22/
PUMILA
3
ARISTIDA
From
type
X*
Decaisne.
specimen.
ANTHEBAE
lineari-oblongae.
STYLI
filiformes,
breves. S T I G M A T A fibrinosa stamina vix superantia. O V A R I U M ovato-oblongum.
Note: = Aristida adscensionis L . var. pumila (Dene) Coss. et Dui".
The
type in the Herbarium of the Jardin des Plantes at Paris
*) Error for palea superior.