ACACIA HINDSII, THE BROAD-THORN OF THE PACIFIC COAST OF MEXICO. FLORETS IN LAX FLEXIBLE SPIKES; PODS SCIMITARLIKE, OPENING BY A SINGLE SUTURE. SPECIMEN FROM THE TYPE LOCALITY, MANZANILLO BAY, STATE OF COLIMA. NATURAL SIZE. ORIGINAL.

ACACIA TEPICANA, FROM TEPIC, MEXICO, SHOWING ITS RECURVED ACUMINATE PODS, OPENING BY A SINGLE SUTURE, AND ITS SINGLE ROW OF SEEDS EMBEDDED IN FELTLIKE PULP. NATURAL SIZE. ORIGINAL.

ACACIA COLLINSII, A SPECIES WITH TWISTED SPINES, TWO-VALVED DEHISCENT PODS, AND SEEDS IN Two Rows. PHOTOGRAPH OF TYPE MATERIAL. CHIAPAS, SOUTHERN MEXICO. NATURAL SIZE. ORIGINAL.

ACACIA NELSONII, A SPECIES WITH CRESCENT-SHAPED SPINES, LONG-STEMMED FLOWER SPIKES AND FLORETS BORNE ON A VERY SLENDER RECEPTACLE. PHOTOGRAPH OF TYPE SPECIMEN, FROM ACAPULCO, MEXICO. NATURAL SIZE. ORIGINAL.

ACACIA COOKII, REMARKABLE FOR ITS CLUSTERS OF GLOBOSE FLOWER HEADS; FLORETS BORNE ON KNOBLIKE RECEPTACLES. PHOTOGRAPHED IN FIELD, MOUNTAINS OF ALTA VERAPAZ, GUATEMALA, BY O. F. Cook. NATURAL SIZE.