PITTIER—MIDDLE AMBRICAN SPECIES OF LONCHOCARPUS. 43 
Flowers geminate along the rachis, rarely several together and then 
the leaves pellucid-punctate. 
Leaflets glabrous above. 
Leaflets not pellucid-punctate. 
Standard callous or auriculate at the base. 
Standard mostly silky without; upper suture of 
of the legume thickened and broader at the 
seeds...........-2-00-0-- 2 ee eee eee eee eee 1. NEUROSCAPHI. 
Standard glabrous or sparsely silky without; 
upper suture of the legume not thickened.. 2. DENsIFLORI. 
Standard not callous nor auriculate at the base, per- 
fectly glabrous without or very sparsely silky.. 3. Laxrr.ort. 
Leaflets pellucid-punctate; standard glabrous or sparsely 
silky without..............- 2002 e eee eee ee eee eee 4. PunctTatTt. 
Leaflets tomentose or villous on both sides........-.-------- 5. ERIOPHYLLI. 
Flowers mostly fasciculate along the rachis; leaflets not pellucid- 
punctate. 
Flowers irregularly paniculate..................--.----0-005 6. PANICULATI. 
Flowers in simple or scarcely ramified racemes.............-- 7. FASCICULATI. 
His second section, Densiflori, Bentham again subdivided, according 
to the size and dimensions of the leaves, into Macrophylli, Acuminati, 
and Obtusifolii, while other subdivisions, founded on characters of the 
carina or of the standard, were established in section 7, Fasciculati. 
In the present paper I shall not discuss the last two sections, Panicu- 
lati and Fasciculati. They are not represented among the Middle 
American species of Lonchocarpus, and besides this they are so well 
characterized that they can be considered a priori as natural divisions 
within the genus. 
In the other five sections the known species were grouped by Ben- 
tham in the following manner: 
1. NEUROSCAPHI: OsTUSIFOLII— 
guatemalensis. rugosus. 
sericeus. obovatus. 
neuroscapha. 3. ERIOPHYLLI: 
parviflorus. phaseolifolius. 
2. DENSIFLORI: velutinus. 
MACROPHYLLI— fendleri. 
unifoliolatus. eriophyllus. 
macrocarpus. 4, LAXIFLORI: 
spiniflorus. (Formed of 6 exclusively Brazilian 
ACUMINATI— species. ) 
hondurensis. 5. Punorati: 
atropurpureus. violaceus. 
lanceolatus. confertiflorus. 
rubiginosus. araripensis. 
nitidus. subglaucescens. 
Subsequent advance in the knowledge of the genus calls for the 
transfer from the section Densiflori to the section Neuroscaphi of L. 
