Nemesia acuminata Benth.

A procumbent herb, glabrous, branched, 9 in. high or more, shining; root perhaps perennial; stem and branches tetragonous, furrowed; internodes about as long as the leaves; leaves opposite, ovate or lanceolate, acuminate or acute at the apex, subcordate or subtruncate at the sessile 5-nerved base, sharply toothed or serrate, 1/4-1 1/4 in. long, 1/12-1/2 in. broad; teeth rigid at the apex; flowers axillary; floral leaves bract-like, gradually smaller towards the ends of the stem and upper ascending or erect branchlets; peduncles slender, 1/5-1/2 in. long; calyx-segments lanceolate, acuminate or acute, about 1/8-1/6 in. long; corolla-lobes oblong, apparently about 1/4 in. long; lower lip broad, rounded, entire, mucronulate at the apex, about 1/3 in. in diam.; spur short, straight, cylindrical, obtuse, about 1/16 in. long; palate thinly pubescent; capsules semi-elliptic, dilated at the apex into two lateral spreading-ascending acute horns, slightly unequal and nearly rounded at the base, 1/6 long, or including the horns 1/5 in. long, 1/5 in. broad or including the horns 1/4 in. broad; valves glabrous, their apices inclined at a very obtuse angle or continuous in nearly the same line at the point of contact, curving gently upwards towards their outer corners at the horns.