KEY TO THE INDIGENOUS SPECIES

1Figs solitary in the leaf axils; stamens 2; stigmas 2 (subg. Pharmacosycea).
1'Figs in pairs in the leaf axils or several together on minute spurs, also below the leaves; stamen 1; stigma usually 1 (subg. Urostigma)
2Epidermis of the petiole flaking off.
2'Epidermis of the petiole persisting.
3Stipules 4-9.5 cm long; blade scabrous above.
3'Stipules 1-2.5 cm long; blade smooth above.
4Figs on spurs, also below the leaves and then often more than 2 together.
4'Figs not on spurs, usually confined to the leaf axils and usually in pairs.
5Blade beneath with dense brown indument.
5'Blade beneath glabrous or with sparse, minute, brown hairs.
6Stipules 2-8 cm long; blade at least 20 cm long, narrowly obovate.
6'Stipules 0.3-1(-2) cm long; blade up to 16 cm long, if up to 22 cm long, then elliptic to narrowly elliptic.
7Secondary veins in dried leaves usually obscure above; blade lanceolate, apex subacute to subacuminate; stipules up to 1.7 cm long; figs when drv 0.3-0.5 cm in diam.; peduncle 0.2-0.5 cm long.
7'Secondary veins in dried leaves usually distinct above; blade elliptic to oblong or obovate to narrowly obovate, if lanceolate, then the apex rounded to obtuse or distinctly acuminate, the stipules up to 1 cm long, the figs when dry at least 0.5 cm in diam. and/or the peduncle up to 0.2 cm long (F. Americana complex).
8Apex of the fig protruding.
8'Apex of the fig rounded (or slightly depressed).
9Figs when dry 0.5-1.2 cm in diam.
9'Figs when dry 0.3-0.4 cm in diam.
10Blade usually up to 10 cm long, mostly (ob)lanceolate to narrowlv obovate: petiole up to 1 cm long, ca. 1.5 mm thick.
10'Blade usually 10-20 cm long, mostly elliptic to oblong; petiole up to 3 cm long. 2-3 mm thick.
11Blade glabrous or at most minutely puberulous on the midrib beneath.
11'Blade ± conspicuously hairy, at least on the midrib beneath.
12Figs sessile or subsessile.
12'Figs pedunculate (peduncle at least 0.2 cm long if the figs when dry at least 1 cm in diam. or at least 0.1 cm long if the figs when dry at most 1 cm in diam.).
13Figs when dry at least 1 cm in diam.
13'Figs when dry at most 1 cm in diam.
14Petiole at most 1.5(-2.5) cm long.
14'Petiole (2-)4-12(-20) cm long.
15Apex of the blade acuminate.
15'Apex of the blade rounded (to obtuse).
16Ostiole plane; petiole (2-)3-4 mm thick.
16'Ostiole prominent; petiole 1-2(-2.5 mm thick.
17Base of blade acute.
17'Base of blade (sub)cordate.
18Ostiole surrounded by a 3-angular (or circular) rim.
18'Ostiole not surrounded by a rim.
19Figs sessile, when dry 1.5-2.5 cm in diam.; basal bracts 5-8 mm long: ostiole 4-8 mm in diam.
19'Figs subsessile, when dry 0.8-1.2 cm in diam.; basal bracts 3-4 mm long: ostiole ca. 2 in diam.
20Ostiole of fig surrounded by a 3-lobed rim.
20'Ostiole of fig not surrounded by a rim.
21Ostiole prominent; petiole 1-4.5 cm long; apex of the blade more or less abruptly acuminate to subcaudate.
21'Ostiole plane; petiole (2-)4-12 cm long; apex or the blade subacute or faintlv acuminate.
22Figs when dry at least 1 cm in diam.
22'Figs when dry at most 1 cm in diam.
23Ostiole sunken in a crateriform apex of the fig.
23'Ostiole plane (sometimes surrounded by a low rim).
24Figs when dry 1.2-2 cm in diam.; basal bracts ca. 2.5 mm long.
24'Figs when dry 0.8-1.2 cm in diam.; basal bracts 1-1.5 mm long.
25Figs ellipsoid.
25'Figs (sub)globose.
26Ostiole surrounded by a 3-angular (or circular) rim.
26'Ostiole not surrounded by a rim.
27Blade at the base emarginate; petiole 0.8-2.5 cm long.
27'Blade at the base rounded, truncate or widely (sub)cordate; petiole (2-)4-12 cm long.
28Basal bracts 5-8 mm long.
28'Basal bracts 1-4 mm long.
29Peduncle 0.2-1 cm long; petiole when dry yellowish (to pale brown).
29'Peduncle up to 0.2 cm long; petiole when dry usually blackish
30Figs 0.5-0.7 cm in diam.; peduncle 0.2-0.5 cm long.
30'Figs 0.3-0.5 cm in diam.; peduncle 0.1-0.2 cm long.
31Base of the blade acute to obtuse; petiole when dry usually blackish: stioules minutely puberulous.
31'Base of the blade cordate to rounded; petiole when dry usuallv brown or yellowish; stipules glabrous.