The common names of Adlumia fungus are climbing fumitory, mountain fringe, and allegheny vine. The vine…
Pictured is the cross section of a leaf of Agave attenuate. The leaves are spreading with recurved tips.…
The common names of Amorphophallus riviera are devil's tongue and snake palm. Pictured is the flower…
The leaf blades of Anthurium andraeanum are drooping. The flower spike is three to four inches long…
Pictured is a young leaf, not yet showing the arched depressions, of Anthurium veitchii. The leaf blade…
Pictured are the flower cluster and the leaf cluster of an apple tree.
The fruit buds of the apricot are borne beside the leaf-bud and also on spurs. This is similar to the…
Pictured are radical leaves of aquilegia canadensis, common name common columbine. The leaves are one…
The leafy branchlets of Araucaria rulei are very long. The leaves are oval and concave. The leaves are…
Araucaria bidwillii is rather narrow in growth. The branches are simple and the leaves grow in two rows.
The common name of Araucaria imbricata is monkey puzzle. The leaves overlap. The leaves are very stiff,…
Illustrated is injury to a leaf by a small sized, leaf eating caterpillar.
Illustrated is an injury to leaves by a large sized, leaf eating caterpillar.
The larvae of leaf-miners eat out the tissue of the leaves of elm between the lateral veins. This leaves…
The tarspot disease of maple is caused by rhytisma acerinum. The diseased spots appear as blotches of…
The tenuissimus variety of Asparagus plumosus is a wiry stemmed variety with fewer leaf-like branches.…
The leaves of Atalantia citrioides are two to three and a half inches long and oval shaped.
Pictured is a plant arising from the base, or tip, of a triangular leaf cutting of begonia.
Illustrated is a section of cabbage head. It shows the thickened rachis and leaf stalks. It also shows…
The pereskia fruit is apple shaped and bears a number of leaf-like bracts on the skin.
Illustrated is a spiny leaf of carduus arvensis or cirsium arvense. It is also known as Canada thistle.
The section of carnation shows the leaf anthers. One is in the process of doubling.
Illustrated is the leaf of castanea dentata, a variety of chestnut. The leaf is oblong and tapers to…
Illustrated is the leaf of castanea sativa, a variety of chestnut. The leaves are oblong and taper to…
Illustrated are leaflets of cedrela and ailanthus. The credrela leaflet is on the right.
Ceratozamia mexicana has a thick, short trunk covered with the remains of fallen leaf stalks. The leaves…
The leaf blades of ceropteris triangularis are two to five inches long and wide. The stalks are six…
The common name of chamaedaphne is leather leaf. The calyculata variety is a bush with spreading or…
The leaves of grapefruit are large and dark, glossy green above. The shape is oval or elliptic oval.
Pictured is the leaf or sour or seville orange. The leaves are light green when young and three to four…
Illustrated is a normal leaf of cobaea scandens. The terminal leaflet is represented by a tendril.
The branches of cuphea ignea are somewhat angled. The flowers stalks are two to four times long than…
Illustrated is the leaf of sago palm, or cycas revoluta. The leaves are long and recurved. The leaves…
Illustrated is the tip of a leaf of dennstaedtia punctilobula. The leaves are one to two and a half…
Illustrated is the leaf of squirrel corn, the common name of dicentra canadensis. The leaves are finely…
Illustrated is a disease of cucumber leaf. The dying margin shows that the trouble is due to some interference…
Illustrated is tip burn of the potato leaf. It is a physiological difficulty or disease.
Illustrated are nymphs of the four-lined leaf bug and the adult of the tarnished plant bug. The small…
The cocoon of the promethea moth is made in the roll of a leaf. The insect weaves a web around the leaf…
Illustrated is a leaf of belleville dock. It is a European and North American plant. It is really a…
Amazon lily is the common name of the eucharis plant. Pictured is the leaf of E. grandiflora and the…
Poinsettia is also known as Christmas or Easter flower. It is native to moist, shaded areas of tropical…
Mexican fire plant is the common name of euphorbia heterophylla. It is native in a range from the eastern…
Livistona humilis is native to north Australia. The stems are four to sixteen feet high. The leaf stalk…
Illustrated is a leaf of melia azedarach. The common names are China tree, China berry, and pride of…
Illustrated is the leaf of the common moonseed, menispermum canadense. The leaves vary in shape. Some…
Illustrated are the leaves of morus alba (b) and morus multicaulis (a). Both are varieties of mulberry.