PITTIER—REVISION OF THE GENUS INGA. 207 
The late M. Micheli compared this very variable species with Inga insignis 
Kunth, from the South American Andes. The relationship is not very apparent, 
except perhaps in the peculiar shape of the fruits. With reference to the habit, 
foliage, and flowers, the likeness with I. panamensis Benth. is much more strik- 
ing, even if it is out of question to claim any close affinity between these two 
species. 
Inga preussii Harms, Repert. Nov. Sp. Fedde 13: 420, 1914. 
A tree 15 meters high; branchlets angulate, the bark brownish gray, 
lenticellose, the younger parts densely brownish-pubescent. 
Rachis of the leaves densely brownish-villous, winged between the leaflet 
pairs, 5 to 13 cm. long, the petiolar part 1.5 to 3 cm. long; stipules ovate or ovate- 
lanceolate, densely tomentose-pubescent without, about 5 mm. long; leaflets 3 or 
4-jugate, petiolulate, coriaceous; glands small, subsessile, pertuse; petiolules 2 
mm. long or less, densely brownish-pubescent; leaflet blades ovate to ovate- 
elliptic or oblong, subacute or obtuse at the base, acute or rarely acuminate at 
the apex, light green and sparsely pilose above, paler, reticulate, and densely vil- 
losulous beneath, the costa and veins pubescent on both faces and prominent 
beneath; blades of the basal pair 5.5 to 6.5 em. long, 2.5 to 3 cm. broad, those 
ef the terminal pair 10 to 12 cm. long, 5 to 7 cm. broad. 
Inflorescences single or geminate in the axils of the leaves, the peduncles 6 to 
10 cm. long, the flower heads ovoid-elongate; bractlets lanceolate, acute, 7 to 14 
mm. long; flowers pedicellate(?) ; calyx tubular, villosulous or sparsely hairy, 
more or less striate, 10 to 12 mm. long; corolla densely silky-villous, about 
2 cm. long; staminal tube short-exserted. 
Legume sessile, stipitate, glabrous, 21 cm. long or less, the valves 2.5 to 3.0 
cm. broad, concave, meeting in a rounded apex, the margins concave, broadly 
8-sulcate, 1 to 1.5 cm. broad at the base and gradually narrowing toward the 
apex. 
Ext Satvapor: Hacienda Guadalupe, near San Salvador, flowers, February, 
1900, Preuss 1386 (type). Above Izalco, Department of Sonsonate, alt. 
800 meters, fruits, February 25, 1907, Pittier 1974. 
The “cujiniquil,” or “cujin,” is probably the species most frequently used 
as coffee shade in El Salvador and western Guatemala. According to the plate 
in Preuss’s work,! where the species was first cited, the flowers are pedicellate, 
a character which would distinguish it from all the other members of the group; 
this character, however, is doubtful, as it is not mentioned by Harms, and the 
fruits appear to be sessile. Inga rensoni, which is closely related, is densely 
fulvous-pubescent; its bractlets are exceptionally developed, and its calyx is 
very long. 
Inga biolleyana Pittier, sp. nov. 
A tree; branchlets angulate, covered with lenticels, the younger parts ferru- 
ginous-pubescent. 
Rachis of the leaves terete, exalate, marginate, or winged only urder the 
upper leaflet pair, ferruginous-pubescent, 4 to 9 cm. long, the petiolar part 
always smooth, 2 to 3 em. long, the wing, when present, up to 4 mm. broad; 
stipules broadly ovate, acute, 7 to 9 mm. long, ferruginous-pubescent without, 
persistent ; leaflets sometimes 2-jugate, mostly 3-jugate, subcoriaceous, petiolu- 
late, the terminal ones oblique; glands small, short-stipitate, often obsolete; 
petiolules pubescent, 2 to 3 mm. long; leaflet blades ovate-elliptic, cuneate to 
an obtuse base, acute at the apex, sparsely hairy or glabrescent and more or 
less lustrous above, paler, reticulate, and sparsely hairy beneath, the costa 
1Hxpedition nach Central- und Siidamerika 354. pl. 8. f. 1, 2. 1901. 
