1、 Plant differences

Pennisetum is an annual herb with a height of about 9 to 60 cm. The difference in plant height is obvious. The stem is relatively upright without the distribution of small hairs, with small edges on it

Patrinia villosa is a perennial herb with a height of about 10 to 30 cm and an upright or oblique stem

2、 Difference on blade

The leaves of Pennisetum are oval and oblong, with a length of about 3 to 5 cm, a width of about 1 to 1.5 cm, and a petiole of about 1 to 3 cm

The leaves of Patrinia villosa are strip lanceolate, oblanceolate or strip, about 7 to 20 cm long and about 0.5 to 2 cm wide. The color of the leaves is gray green

3、 Differences in flowers

The flower color of Pennisetum is white, the diameter is about 2mm, and the pedicel is relatively thin

The flowers of Patrinia villosa are yellow, light yellow, white or lavender