Plant morphology share the same basic structure and development as leaves in other plants, and therefore cactus spines are homologous to leaves as well. This aspect of plant morphology overlaps with the study of plant evolution and paleobotany. Secondly, plant morphology observes both the vegetative (somatic) structures of plants, as well as the reproductive structures. The vegetative structures of vascular plants includes the study of the shoot system, composed of stems and leaves, as well as the root system. The reproductive structures are more varied, and are usually specific to a particular group of plants, such as flowers and seeds, fern sori,
Conservatory of Flowers for plant benches, and other small repairs. In 1918 a fire, commencing in the furnace room, caused damage to the conservatory's Potting Room and adjacent Dome Room. Repairs were made as needed. During the Depression, the Conservatory of Flowers, due to apparent lack of maintenance, was in poor condition. The Park commissioners instructed the superintendent of Parks to close the Conservatory of Flowers in 1933 and construct proper barricades to prevent possible injury to citizens. The woodwork, foundations, girders, posts, and various structural members became rotted and decayed to such an extent that certain portions of the conservatory were reported